46.-Have you told your e-pal about your birthday party?

　 -No, not yet. Tom_______ the computer all this morning.

　　 A. uses　　　　 B. used　　　　　　　 C. is using　　　　　 D.　 has been using

45. Now that she is out of a job, Lucy ____ going back to school, but she hasn’t decided yet.

　　 A. had considered　 　B. has been considering　 C. considered　　　 　D. is going to consider

44. Years ago we didn’t know this, but recent science _____ that people who don’t sleep well soon get ill.

　　 A. showed　　　　　 B. will show　　　 C. has shown　 D.　 is showing

43. Professor Wang ______ articles for our newspaper for three years, and he _____ about twenty articles.

　　 A. has been writing ;has written　　　 B. has been writing; wrote

　　 C. is writing; has been writing　　　　 D. had written; has written

42.My elder sister is an actress. She ____ in several films so far .

　　 A. appears　　　　 B. appears　　　　 C. has appeared　　　 D. is appearing

41.-You look very tired,________ at all last night ?

　　 -No, not really .I’m tired out now .

　　 A. Do you sleep　 B. Did you sleep　 C. Were you sleeping　 D. Had you slept

40.如果野人真的存在，我们或许有机会亲眼见识一下野人呢。

　 If Yetis really exist, we might have the chance _____________________________.

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39.许多人认为，那些很大的脚印有可能是开玩笑的人们留下的。

　 Many people think those big footprints ____________________by people playing a joke.

38.工程师们看见野人以惊人的速度和力气奔跑，可惜没有拍下照片。

　 The engineers saw the Yetis ________________________________ ,but it was a pity that they were not able to take any pictures.

37.最近，许多人报告说他们看见了不明飞行物。

　 Recently, many people _________________________________the UFO.