15.(　 ) Tom goes to school on foot ______ by bike.

A. instead of　 B. instead　　　　 C. still of　　　　 D. replace

14.(　 ) In order to save energy , we shouldn’t ______ the air conditioning all the time.

A. keep on　　 B. turn off　　　　 C. keep off　　　 D. turn on

13.(　 ) Watching too much TV can do harm ______ our eyes.

A. for　　　　 B. at　　　　　　 C. of　　　　　　 D. to

12.(　 ) ______ care of the environment is very important.

A. Takes　　　 B. Take　　　　 C. taken　　　　 D. taking

11.(　 ) They________ home _________ the night of April 7, 2002.

　　 A. got, in　　 B. reached, on　　 C. arrived, in　　 D. arrived at, on

10.(　 ) The boy with____ unusual face said that he had____ useful machine at home.

　　 A. a, a　　　 B. a, an　　 C. an, a　　 　D. an, an

9. ------Why didn’t you go to see the flower show yesterday?

　 　　-------Because I__________ it twice.

A. see　　 B. saw.　　 C. have seen　　 D. had seen

8. ------Oh, Mrs.King, I saw Mr. Green in the street just now.

　　　 ------Really? I____ him since his return two years ago.

A. have seen　 B. didn’t see　　 C. haven’t seen　 D. hadn’t seen

7. -----Do you know ____he is going to stay in London?

　 ------Sorry, I don’t. Maybe a few weeks, but I’m not sure.

A. when　　　　 B. how long　　 C. what time　　 D. how soon

6. Volleyball is _______ more popular than basketball in our school.

A. much　 　B. little　　　 　　　C.less　 　　　　D.moat