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37.Jeandidnothavetimetogototheconcertlastnightbecauseshewasbusyforherexamination.A.toprepareB.tobepreparedC.preparingD.beingprepared这个怎么选,为什么.

题目详情
37.Jean did not have time to go to the concert last night because she was busy ____ for her examination.
A.to prepare B.to be prepared
C.preparing D.being prepared
这个怎么选,为什么
.
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答案和解析
be busy doing sth. 固定短语用法,忙于某事,所以选C,主动