Jenny didn’t have time to go to concert last night because she was busy ______ f

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问题 Jenny didn’t have time to go to concert last night because she was busy ______ for her examination.

选项 A、preparing
B、to be prepared
C、to prepare
D、being prepared

答案 A

解析本题考查固定结构。be busy doing sth.表示“忙于做某事”。主语she与动词prepare是主动关系。

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