My wife was busy ______ when I got home.A、cookB、to cookC、cookingC此题考查固定搭配。be

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问题 My wife was busy ______ when I got home.

选项 A、cook
B、to cook
C、cooking

答案 C

解析此题考查固定搭配。be busy doing sth．意为：正在忙于做某事。

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