Colons, Semicolons, Commas
After hours of debate about budget cuts, staffing shortages, and declining enrollment, the school board met behind closed doors to finalize their decision. When they emerged, it was clear that a major change was coming; they would consolidate the two smallest elementary schools into one building for the following year.
Choose the correct edit:
A. enrollment the school board reached a final decision: they would consolidate the two smallest elementary schools into one building for the following year
B. enrollment; the school board reached a final decision, they would consolidate the two smallest elementary schools into one building for the following year
C. NO CHANGE
D. enrollment, the school board reached a final decision: they would consolidate the two smallest elementary schools into one building for the following year
D
Explanation:
The introductory series (“budget cuts…enrollment”) requires a comma before the main clause. Additionally, a colon correctly introduces the explanation of “final decision.”
After reviewing all of the applications submitted over the past several months, the admissions committee met to evaluate each candidate carefully and select those who demonstrated both academic excellence and strong leadership potential.
Choose the correct edit:
A. applications; the admissions committee selected the candidates who demonstrated both academic excellence and strong leadership potential
B. NO CHANGE
C. applications the admissions committee selected, the candidates who demonstrated both academic excellence and strong leadership potential
D. applications, the admissions committee selected the candidates who demonstrated both academic excellence and strong leadership potential
D
Explanation:
An introductory phrase must be followed by a comma. Only D correctly places it.
The collection of rare manuscripts, which includes several first editions and annotated drafts by well-known authors, are housed in a climate-controlled archive to preserve their condition.
Choose the correct edit:
A. authors, is housed in a climate-controlled archive to preserve its condition
B. NO CHANGE
C. authors is housed in a climate-controlled archive to preserve their condition
D. authors, are housed in a climate-controlled archive to preserve its condition
A
Explanation:
The true subject is “collection”, not “manuscripts.” Because “collection” is singular, the verb must be is housed (singular). The pronoun must also match → its condition (singular).
The committee presented their final recommendations after months of careful analysis and discussion among its members.
Choose the correct edit:
A. NO CHANGE
B. presented his final recommendations after months of careful analysis and discussion among its members
C. presented its final recommendations after months of careful analysis and discussion among its members
D. presented their final recommendation after months of careful analysis and discussion among its members
C
Explanation:
“Committee” is singular → its recommendations
Because the proposal lacked sufficient evidence to support its claims about long-term sustainability and economic viability.
Choose the correct edit:
A. NO CHANGE
B. The proposal lacked sufficient evidence to support its claims about long-term sustainability and economic viability
C. Lacking sufficient evidence to support its claims about long-term sustainability and economic viability
D. Because the proposal lacked sufficient evidence to support its claims about long-term sustainability and economic viability, it was rejected by the review board
D
Explanation:
“Because…” creates a fragment unless attached to a main clause. D correctly completes it.
The research team identified several factors that contributed to the experiment’s failure: however, they were unable to determine which factor had the greatest impact.
Choose the correct edit:
A. failure however; they were unable to determine which factor had the greatest impact
B. failure; however, they were unable to determine which factor had the greatest impact
C. NO CHANGE
D. failure, however they were unable to determine which factor had the greatest impact
B
Explanation:
“However” is a conjunctive adverb, so it must be preceded by a semicolon and followed by a comma:
The documentary which was filmed over the course of five years provides an in-depth look at the effects of climate change on coastal communities.
Choose the correct edit:
A. documentary which was filmed, over the course of five years provides an in-depth look at the effects of climate change on coastal communities
B. NO CHANGE
C. documentary, which was filmed over the course of five years, provides an in-depth look at the effects of climate change on coastal communities
D. documentary, which was filmed over the course of five years provides an in-depth look at the effects of climate change on coastal communities
C
Explanation:
The clause is nonessential, so it must be set off with commas on both sides.
Each of the proposals submitted by the candidates, along with the supporting documents and references, have been carefully reviewed by the selection committee.
Choose the correct edit:
A. candidates along with the supporting documents and references, have been carefully reviewed
B. NO CHANGE
C. candidates, along with the supporting documents and references have been carefully reviewed
D. candidates, along with the supporting documents and references, has been carefully reviewed
D
Explanation:
The subject is “Each”, which is always singular. The phrase “along with…” is extra information and does not affect agreement.
Neither of the applicants included their complete work history, which made it difficult for the hiring manager to evaluate their qualifications.
Choose the correct edit:
A. included their complete work histories, which made it difficult for the hiring manager to evaluate their qualifications
B. included his or her complete work history, which made it difficult for the hiring manager to evaluate his or her qualifications
C. NO CHANGE
D. included his complete work history, which made it difficult for the hiring manager to evaluate his qualifications
B
Explanation:
“Neither” is singular → requires his or her consistently throughout.
Such as implementing stricter regulations, increasing funding for public programs, and promoting greater awareness among community members.
Choose the correct edit:
A. NO CHANGE
B. Including implementing stricter regulations, increasing funding for public programs, and promoting greater awareness among community members
C. The policy includes several measures, such as implementing stricter regulations, increasing funding for public programs, and promoting greater awareness among community members
D. Implementing stricter regulations, increasing funding for public programs, and promoting greater awareness among community members
C
Explanation:
Only C forms a complete sentence; the others are fragments or incomplete introductions.
During the interview, the candidate emphasized one quality that she believed set her apart from other applicants; her ability to adapt quickly to unexpected challenges in high-pressure situations.
Choose the correct edit:
A. applicants her ability to adapt quickly to unexpected challenges in high-pressure situations
B. NO CHANGE
C. applicants: her ability to adapt quickly to unexpected challenges in high-pressure situations
D. applicants, her ability to adapt quickly to unexpected challenges in high-pressure situations
C
Explanation:
The second part is not a complete sentence, so a semicolon is incorrect. A colon correctly introduces the explanation.
My sister a highly skilled graphic designer recently launched her own business specializing in digital branding and marketing.
Choose the correct edit:
A. sister; a highly skilled graphic designer recently launched her own business specializing in digital branding and marketing
B. NO CHANGE
C. sister: a highly skilled graphic designer recently launched her own business specializing in digital branding and marketing
D. sister, a highly skilled graphic designer, recently launched her own business specializing in digital branding and marketing
D
Explanation:
“A highly skilled graphic designer” is an appositive, so it must be set off with commas.
During a routine inspection of the manufacturing plant, several safety concerns were noted, including outdated equipment and inconsistent maintenance records. Neither the manager nor the employees who were responsible for maintaining the equipment was aware of the malfunction until it caused a significant delay in production.
Choose the correct edit:
A. manager nor the employees who were responsible for maintaining the equipment were aware of the malfunction
B. equipment were aware of the malfunction
C. NO CHANGE
D. employees who were responsible for maintaining the equipment were aware of the malfunction
D
Explanation:
With “neither…nor,” the verb agrees with the closest subject, which is “employees” (plural).
→ Correct: were aware
By the time the team arrives at the stadium, the game already started, and the crowd was growing increasingly restless.
Choose the correct edit:
A. NO CHANGE
B. arrives at the stadium, the game had already started
C. arrived at the stadium, the game had already started
D. arrives at the stadium, the game already starts
C
Explanation:
“By the time” signals a completed earlier action, so past perfect (“had started”) with consistent past tense is correct.
While the team worked diligently to complete the project on time despite numerous unexpected challenges and setbacks, including supply delays and staffing shortages that slowed progress significantly.
Choose the correct edit:
A. The team worked diligently to complete the project on time despite numerous unexpected challenges and setbacks
B. While the team worked diligently to complete the project on time despite numerous unexpected challenges and setbacks, they ultimately succeeded
C. NO CHANGE
D. Working diligently to complete the project on time despite numerous unexpected challenges and setbacks
B
Explanation:
“While…” creates a dependent clause. Only B completes it with a main clause.
The city council proposed several new initiatives: improving public transportation; expanding green spaces; and increasing funding for local schools.
Choose the correct edit:
A. initiatives improving public transportation, expanding green spaces; and increasing funding for local schools
B. initiatives: improving public transportation, expanding green spaces, and increasing funding for local schools
C. NO CHANGE
D. initiatives; improving public transportation, expanding green spaces, and increasing funding for local schools
B
Explanation:
A colon introduces a list, which should use commas, not semicolons. Only B correctly formats the list.
The professor explained the concept thoroughly, but many students still struggled to apply it during the exam.
Choose the correct edit:
A. thoroughly; but many students still struggled to apply it during the exam
B. thoroughly but, many students still struggled to apply it during the exam
C. NO CHANGE
D. thoroughly but many students still struggled to apply it during the exam
C
Explanation:
A comma is required before a coordinating conjunction joining two independent clauses.
A number of recent studies conducted by leading researchers in the field has demonstrated a strong correlation between sleep patterns and cognitive performance.
Choose the correct edit:
A. field have demonstrated a strong correlation between sleep patterns and cognitive performance
B. NO CHANGE
C. field has demonstrated strong correlations between sleep patterns and cognitive performances
D. field have demonstrated strong correlations between sleep patterns and cognitive performance
A
Explanation:
The phrase “a number of” always takes a plural verb → have demonstrated
As the lecture begins, the professor reviewed the key concepts from the previous class and explains how they relate to the material that will be covered in the upcoming exam. The students listen carefully, taking notes and asking clarifying questions when necessary.
Choose the correct edit:
A. begins, the professor reviewed the key concepts from the previous class and explains how they relate to the material that will be covered in the upcoming exam
B. NO CHANGE
C. began, the professor reviewed the key concepts from the previous class and explained how they relate to the material that will be covered in the upcoming exam
D. begins, the professor reviewed the key concepts from the previous class and explained how they related to the material that will be covered in the upcoming exam
A
Explanation:
The sentence begins in present tense (“begins”), so the verbs must remain in present: reviews, explains. Option A maintains consistent tense throughout.
A comprehensive report that outlines the key findings of the study and provides detailed recommendations for future research initiatives.
Choose the correct edit:
A. NO CHANGE
B. The comprehensive report outlines the key findings of the study and provides detailed recommendations for future research initiatives
C. Outlining the key findings of the study and providing detailed recommendations for future research initiatives
D. The committee published a comprehensive report that outlines the key findings of the study and provides detailed recommendations for future research initiatives
D
Explanation:
Only D is a full sentence with a subject + verb.
In analyzing the novel’s central message, the literary critic argued that the protagonist’s journey was not simply about survival but about growth and self-awareness. Ultimately, the novel explores a central theme; that individuals must confront their past in order to move forward.
Choose the correct edit:
A. theme that; individuals must confront their past in order to move forward
B. NO CHANGE
C. theme: that individuals must confront their past in order to move forward
D. theme, that individuals must confront their past in order to move forward
C
Explanation:
The second part is not an independent clause, so a semicolon is incorrect. A colon correctly introduces the explanation.
The athlete ran through the course navigating obstacles maintaining balance and adjusting speed as conditions changed.
Choose the correct edit:
A. course navigating obstacles, maintaining balance and adjusting speed, as conditions changed
B. course; navigating obstacles maintaining balance, and adjusting speed as conditions changed
C. NO CHANGE
D. course, navigating obstacles, maintaining balance, and adjusting speed as conditions changed
D
Explanation:
Items in a series of actions require commas to separate them clearly.
The team of engineers assigned to the project, who specialize in structural design and materials science, are working to develop a more efficient system.
Choose the correct edit:
A. project, who specialize in structural design and materials science, is working to develop a more efficient system
B. NO CHANGE
C. project, who specializes in structural design and materials science, is working to develop a more efficient system
D. project who specialize in structural design and materials science, are working to develop a more efficient system
A
Explanation:
The subject is “team” (singular) → verb must be is working.
The clause “who specialize” correctly refers to engineers (plural).
The researcher carefully analyzed the data, identifies patterns that were not immediately apparent, and presents her findings in a detailed report.
Choose the correct edit:
A. analyzed the data, identified patterns that were not immediately apparent, and presented her findings in a detailed report
B. NO CHANGE
C. analyzes the data, identifies patterns that were not immediately apparent, and presents her findings in a detailed report
D. analyzed the data, identifies patterns that were not immediately apparent, and presented her findings in a detailed report
A
Explanation:
All actions occur in the past, so verbs must be consistent: analyzed, identified, presented.
She carefully reviewed the document however she overlooked several critical errors that ultimately affected the final outcome.
Choose the correct edit:
A. document; however, she overlooked several critical errors that ultimately affected the final outcome
B. NO CHANGE
C. document, however she overlooked several critical errors that ultimately affected the final outcome
D. document however; she overlooked several critical errors that ultimately affected the final outcome
A
Explanation:
Correct structure is semicolon + however + comma.