Sally is busy ______ her homework. A.in B.at C.with D

Sally is busy ______ her homework.
A.in B.at C.with D.on
kaimng 1年前 已收到1个回答 举报

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C

考查固定结构。Be busy with sth.忙于某事;be busy doing sth.忙于做某事。所以选 C。

1年前

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