精选优质文档-倾情为你奉上巩固性练习：从A、B、C、Dxx选择最佳答案。1-You didnt wait for Mr. Smith last night, did you?-No, but we _. He didnt return home at all.A. couldnt have waitedB. neednt haveC. didnt need toD. should wait A. couldB. mightC. shouldD. must3-May I speak to your manager Mr. Smith at six oclock tonight ?”-“Im sorry, Mr. Smithto a conference before then.”A. will have goneB. had goneC. would have goneD. has gone4-Tom took away our teachers cell pho
