46. The farmer got the tractor __BC__ in the field all the day.

A.　　 to work　 B. worked　 C. working　 D. work

45.He must have got the book yesterday, _D__ he ?

A.　　 mustn’t　 B. haven’t　 C. hasn’t　 D. didn’t

44. All these ideas may seem strange to you, but scientists are working hard to _B__ them one by one in time.

　 A. come true　 B. realize　 C. make　 D. produce

43. All the experiments _A_ by Miss Lu were highly praised.

　 A. conducted　 B. conducting　 C. conduct　 D. had conducted

42.Such difficult experiments __B_ you did that day need much patience ___ imagination.

A.　　 like; as well as　 B. as; as well as　 C. for; as well D. like; as well

41.They were the first people _CB__ in this vast farmland.

A.　　 living　 B. to live　 C. lived　 D. live

40. This house is worth 1,000 yuan __C_ .

　 A. more and less　 B. after all　 C. at the most　 D. at the presant

39. I’ll _B__ my first teacher’s home tomorrow.

　 A. call for　 B. call at　 C. call in　 D. call on

38. Helen __C a Chinese for almost twenty years.

　 A. has married to　 B. has married　 C. has been married to　 D. has been married with

37. On her way home, she found her handbag __CB_ .

　 A. being lost　 B. missing　 C. losing　 D. has gone