We don not know____it next.Let us go and ask Mr.Li.A.what to do B.to do what C.whether to do D.to do whether

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We don not know____it next.Let us go and ask Mr.Li.A.what to do B.to do what C.whether to do D.to do whether

We don not know____it next.Let us go and ask Mr.Li.A.what to do B.to do what C.whether to do D.to do whether
We don not know____it next.Let us go and ask Mr.Li.
A.what to do B.to do what C.whether to do D.to do whether

We don not know____it next.Let us go and ask Mr.Li.A.what to do B.to do what C.whether to do D.to do whether
C
要用what to do的话,要再加介词about.
what to do about it

C 我们不知道接下来是否去做。让我们去问李先生吧。

答案是C. whether to do it 做know的宾语。
如果选A的话,句子必须是We don't know what to do with / about it ------- it的前面写上with / about,这样句子就完整了。