- 问题详情:Thismachine,______formanyyears,isstillworkingperfectly.A.afterwhichIhavelooked B.whichIhavelookedafterC.thatIhavelookedafter D.Ihavelookedafter【回答】B.whichIhavelookedafter构成一个非限制*定语从句.知识点:定语...
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- 问题详情:Thismachine_______.Ithasn’tworkedforyears.A.didn’twork B.wasn’tworking C.doesn’twork D.isn’tworking【回答】C知识点:动词时态与语态题型:选择题...
- 12673