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guess it ______ now. A. has graded B. is graded C. is being graded D. is grading 23. — I don’ t suppose the police know who did it. — Well, surprisingly they do. A man has been arrested and ______ now. A. has been questioned B. is being questioned C. is questioning D. has questioned 24. My friend, who ______ on the International Olympic Committee all his life, is retiring next month. A. served B. is serving C. had served D. has served 25. I _____ along the street looking for a place to park when the accident ______. A. went。 had occurred 26. — Have you received Jack’ s plan? — Yes, but I don’ t think his plan is______ . A. worth being considered B. worthy to be considered C. worthy of considering D. worth to be considered 27. The new shirt you bought for me ______ very fortably. A. is worn B. is wearing C. has worn D. wears 28. Now the world’ s attention ______ the stocking markets, as they have great influence in the world’ s economy. A. is fixing on B. has fixed on C. is being fixed on D. had been fixed on 29. — Listen, Lily is playing the piano! — Wow, how sweet the music ______! A. is heard B. hears C. is sounding D. sounds 30. He didn’ t see the notice that ______ “ Keep Out” and walked in directly. A. read B. printed C. told D. wrote 答案: 15 AAACC 610 ADBAD 1115 BAACC 1620ACDAC 2125 CCBDC 2630 BDCDA