Lecture-动词的时和体.ppt

14. Jack ___ a postman for about six years. A. has become B. has turned C. has changed D. has been (D) 15. Would you please give him the massage the moment he ____? A. arrives B. arrived C. is arriving D. will arrive (A) 16. He _____ tennis every day since he ______ sixteen. ??? A. has played... is?????????? B. played... has been ??? C. was playing...has been D. has been playing...was (D) 17. Im sure your suggestion will _____ the problem. ??? A. contribute to solving???? B. be contributed to solve ??? C. contribute to solve?????? D. be contributed to solving (A) 18. ?For some time now, world leaders___ out the necessity for agreement on arms reduction.  ?? A. had been pointing? B. have been pointing  C. were pointing ? D. pointed (B) 19. She ____ for 12 years by the time she graduates from the Foreign Language Institute. ?A. has studied English??? B. has been studying English ?C. had studied English??? D. will have been studying English (D) 20. When they arrived at the airport, the plane _____ . ??? A. already set off???????? B. set off already ??? C. had already set off?? D. has already set off (C) 21. The moon _____ around the earth. ??? A. move B. moves C. will move D. has moved (B) 22. ----What will you be doing in the summer? ?? ? ----_____ English in a high school. ?? A. To teach???? B. Teaching??????????? C. Will be teaching????D. Will teach (B) 23. Is this the first time you _____ Beijing ? ?? A. have visited???? B. would visit?????? C. visited??????????????? D. have been visiting (A) 24. Great as Einstein was, many of his assumptions _____ today and modified by contemporary scientists. ?? A. are to challenge??????? B. may be challenged ?? C. are challenging???????? D. have been challenged (D) 25. You _____