Verb Tenses
The business school at our university (found) ______ almost 100 years ago.
was founded
The major (source) ______ of air pollution vary from city to city.
sources
Many kind of vegetables are grown in California's Imperial Valley.
X
kinds
feet
Each of the Ice Ages were more than a million years long.
Correct!
For thousands of years, farmers (use) _______ scarecrows to protect their crops from hungry birds.
have used
Many championship (automobile) ________ and motorcycle races take place in Daytona Beach, Florida.
automobile
All college and universities get their funds from a variety of sources.
Correct!
What is the plural of child?
children
Teeth are covered with a hard substance called enamel.
Correct!
NASA's space probe New Horizon (fly) _______ by the planet Pluto in the year 2025.
will fly
The electric toaster was one of the earliest (appliance) _______ to be developed for the kitchen.
appliances
The Federalist Papers are a 500-pages collection of eighteenth-century newspapers articles written to support the Constitution.
X
500-page
What is the plural of mouse?
mice
The white pine is the most commercially important tree in North America until the beginning of the twentieth century.
X
was
Before the late eighteenth century, most textiles (make) _______ at home.
were made
The Newbery Award is granted every year to the authors of outstanding books for (child) _______.
Few of the doctors practicing in the thirteen North American colonies had formal training in medicines.
X
medicine
What is the plural of fish?
fish
In the late nineteenth century, many important theories in both the biological and the physical sciences have been produced.
were produced
Cans of paint must be (shake) ______ before use to mix the color evenly.
shaken
Zoonoses are diseases that can be transmitted to (human) _______ beings by animals.
human
In typical pioneer settlements, men, women, and children worked from morning until night at farm and household tasks.
Correct
What is the plural of series?
series
When scientists search a site for fossils, they begin by examining places where the soil have wore away from the rock.
X
has worn