4. 　People can’t live _________ plants.　 (with)

3. 　Her grandfather is ________. He _______ a few years ago. (die)

2.　 ________ down trees will change the weather. (cut )

1.　 He didn’t know much about _________. (farm)

20.(　 ) My teacher often asks us ____. A. not play basketball in the street B. not to play basketball in the street C. play basketball in the street D. playing basketball in the street

19.(　 )Most of the forests have gone, people must ______ down trees . A. stop to cut 　　　　B. stop from cutting C. be stopped from cutting 　　　D. be stopped to cut

18. You aren't a teacher, are you __________. I'm a doctor. A. Yes, I am 　　B. Yes, I am not 　　　C. No, I am no　 　D. No, I am

17.___ fine day it is today. A. What 　　　　B. How 　　　C. What a 　　D. How a

16.Mei Mei is often heard ___ in the next room. A. to sing 　　　B. sings 　　　C. sing 　　　D. singing

14.Let's go and play basketball after. A. Good idea 　　　B. You are right 　　C. Thanks

(　　 )a is bigger than ___country in Africa. A. any 　　B. any other 　　C. other 　　D. the other