People used to think that the earth was flat, ______
A. don't they
B. wasn't it
C. didn't they
D. usedn't it
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Ellis and her sisters could hardly recognize the value of that family heirloom, ______
A. couldn't they
B. couldn't she
C. could they
D. could she
Do you feel ______ a cup of coffee
A. liking
B. to like
C. to liking
D. like
Americans make all of the following proposals to reduce the number of people killed by guns EXCEPT that ______.
A. the use of guns should be reduced
B. all of the guns should be destroyed
C. it should be made difficult for one to get a gun
D. guns should be banned altogether
What is the passage mainly about
A. The exhaust system of a car.
B. Waste gas.
C. The car engine.
D. Air pollution.
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