Missing Commas
Wrong Word + Run On Sentence
Comma Splice
Unnecessary Shift in Person
Subject-Verb Agreement
100

The cat sat on the windowsill staring at the birds outside.

What is "comma after windowsill"?

100

Their going to the store then they're going to meet us at the restaurant. 

What is "They're going to the store, then they're going to meet us at the restaurant."?

100

She loves reading, he prefers watching movies.

What is "She loves reading; he prefers watching movies."?

100

I went to the store, and you picked up some snacks.

What is "I went to the store, and I picked up some snacks."?

100

The dogs barks loudly at night.

What is "The dogs bark loudly at night."?

200

She made pasta for dinner but forgot to add the garlic.

What is "comma after dinner"?

200

I could of gone to the party but I choose to stay home and relax.

What is "I could have gone to the party, but I choose to stay home and relax."?

200

We wanted to go hiking, it started raining. 

What is "We wanted to go hiking, but it started  raining."?

200

When you arrive at the park, one should find a bench to sit on.

What is "When you arrive at the park, you should find a bench to sit on."?

200

She don't like eating vegetables.

What is "She doesn't like eating vegetables."?

300

Although the sun was shining they decided to bring an umbrella just in case.

What is "comma after shining"?

300

Your the best person for the job however you need to submit your application on time.

What is "You're the best person for the job; however, you need to submit your application on time."?

300

The concert was amazing, everyone had a great time, we stayed until the very end. 

What is "The concert was amazing, and everyone had a great time; we stayed until the very end."?

300

If someone wants to succeed, you must work hard everyday.

What is "If someone wants to succeed, they must work hard everyday."?

300

The team are planning their next strategy session.

What is "The team is planning their next strategy session."?

400

The book which was a bestseller was surprisingly easy to read in one sitting.

What is "comma after book and bestseller"?

400

She didn't know weather she should go to the gym or stay home to watch her favorite show.

What is "She didn't know whether she should go to the gym or stay home to watch her favorite show."?

400

I studied all night, I was still nervous for the exam, I think I did well though.

What is "I studied all night, but I was still nervous for the exam; I think I did well, though."?

400

The teacher told us to complete the assignment, and then you need to turn it in by Friday.

What is "The teacher told us to complete the assignment, and then we need to turn it in by Friday."?

400

The committee disagree on the final decision, but it needs to submit their report soon.

What is "The committee disagrees on the final decision, but it needs to submit its report soon."?

500

After the meeting ended everyone quickly left the room eager to return to their tasks.

What is "comma after ended and room"?

500

Its important to practice everyday so you can get better at playing it's really the only way to improve.

What is "It's important to practice every day so you can get better at playing; it's really the only way to improve."?

500

He wanted to travel the world, she wanted to stay home, they couldn't agree on what to do, their plans remained uncertain.

What is "He wanted to travel the world, but she wanted to stay home. They couldn't agree on what to do, so their plans remained uncertain."?

500

If students want to improve their grades, you should start studying earlier and they should also ask for help when needed.

What is "If students want to improve their grades, they should start studying earlier and they should also ask for help when needed."?

500

Neither the student nor the teacher were aware of the schedule change.

What is "Neither the student nor the teacher was aware of the schedule change"?

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