As the mid- examination is coming , the students are busy it.A. preparingB. prepare forC

发布时间：2020-08-16 20:35:51

As the mid- examination is ing , the students are busy      it.
A. preparing
B. prepare for
C. prepare
D. prepareing for

网友回答

A. preparing
(答案→)B. prepare for
C. prepare
D. prepareing for
解析：
此题考查固定短语be busy doing sth表示忙于做某事；prepare for sth表示为…做准备。
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