—Mary cant help the house. Why?—Because she is busy a hotel reservation.A. cleaning; mak

发布时间：2020-08-21 10:42:27

—Mary can't help      the house. Why?
—Because she is busy     a hotel reservation.
A. cleaning; making         B. to clean; making          C. cleaning; to make    

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解析：can’t help doingsth 表示忍不住做某事，be busy doing sth表示忙于做某事，故选A
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