I’m very busy (prepare) ______ for the examination now.preparing我正忙着准备这次考试。本题考查短

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问题 I’m very busy (prepare) ______ for the examination now.

选项

答案 preparing

解析我正忙着准备这次考试。本题考查短语的固定搭配。be busy doing忙于做某事。

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