名词性从句和非谓语动词专练新人教版试卷
日期:2010-05-12 05:22
·名词性从句和非谓语动词专练,以及部分定语从句状语从句,虚拟语气的练习, 1 ______ such heavy pollution already,it may now be too late to clean up the river.(NMET 2000) A.Having suffered B.Suffering C.To suffer D.Suffered,
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