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试题详情及答案解析
He was generous with his time, ________ I was grateful.
A.in whichB.on which
C.to whichD.for which
答案:D
试题分析:考查介词+which。句意:我很感激他花很多时间来帮助我。be grateful to sb for sth因某事感激某人,介词to后跟人;for后跟物,which指代主句,故选D。
考点:考查介词+which