Tony is busy-----his homework.A.doing B.do C.to do D.does

bowyer333 1年前 已收到1个回答 举报

snailshell 幼苗

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Tony is busy doing his homework.
Tony正忙着做作业.
by busy doing 忙着做某事

1年前 追问

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bowyer333 举报

为什么要选doing。原因

举报 snailshell

短语 be busy doing 忙着做某事(上文打错了) by busy with 忙于某事
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