这里可以填写：what to do
或者：how to do it
选择B
I don't know （）.can you help A.what to do it.
I don't know （）.can you help A.what to do it.
I don't know （）.can you help
A.what to do it.B.how to do it C.how to do D.to do how
I don't know （）.can you help
A.what to do it.B.how to do it C.how to do D.to do how
英语人气：493 ℃时间：2019-10-02 21:55:17
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