Barbara did not have time to go to the concert last night because she was busy ______ for her lecture.

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问题 Barbara did not have time to go to the concert last night because she was busy ______ for her lecture.

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

答案C

解析本题考查动词的搭配。句意：芭芭拉昨晚没有去看音乐会，因为她忙着为演讲做准备。be busy doing sth．为固定结构，表示"忙于做某事"。

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大学英语三级B级

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