题目内容
I really don’t know ______ about it.
A.what to do | B.how to do | C.to do what | D.how can I do |
A
A 考查疑问词加不定式。do是及物动词,必须有自己的宾语。选B的话,do缺少宾语,故选A,what作do的宾语。What to do =" how" to do it。
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