We should try to prevent air pollution__________.
The contestant was so nervous that he ______ suddenly, and then fell down on the floor. A. died out B. put out C. passed out
The ______ in the hotel is very poor so there are a few customers in it. A. review B. seat C. health
A __________ is a person who buys something. A. customer B. shop keeper C. bookseller
You have to get your parent’s________ if you want to go on the trip A. arrangement B. agreement C. argument
The cat usually__________ the dog because it was frightened of the dog. A. protects B. bites C. avoids