题目内容

Anyway, Jack knows _______ help about travelling .
A.who to askB.who to ask toC.who to ask forD.to ask for who
C

试题分析:句意:不管怎样,杰克知道向谁求助旅行知识。ask for help求救,疑问词加不定式做宾语,故选C.
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