38. In order to make our city green, ___________.

　 A. it is necessary to have planted many trees　　　 B. many more trees need to plant

　 C. our city needs more trees　　　　　　　　　　 D. we must plant more trees

37. I’ll set you ______ on the corner of your street.

　 A. down　　 B. off　　　 C. up　　　 D. out

36. As we joined the big crowd, I got ______ from my friend.

　 A. separated　　 B. spared　　 C. lost　　 D. missed

35. The mountain climber was ______ I the high mountains, but he didn’t feel _____ at all.

　 A. lonely; alone　　 B. alone; lonely　　 C. alone; alone　　 D. lonely; lonely

34. The incident between the two nations has been settled according to the international _____.

　 A. habit　　　 B. practice　　　 C. custom　　　 D. rule

33. It is the ______ in this country to go out and pick flowers on the first day of spring.

　 A. use　　　 B. Norman　　 C. custom　　 D. habit

32. He has a ______ of biting his lips when he is puzzled.

　 A. custom　　 B. habit　　 C. practice　　 D. customs

31. It’s quite impossible ______ the outside world if no electricity is supplied.

　 A. for us to communicate　　　　　　　 B. for us to communicate with

　 C. of us to communicate　　　　　　　 D. of us to communicate with

30.The player is in poor ______ today; he should be playing much better now.

　 A. condition　　 B. situation　　 C. position　　 D. state

29. When you play football, what ______ do you play?

　 A. part　　 B. situation　　 D. place　　 D. position