摘要:35. help the people in the snowstorm in the south made him worried. A.Not known how to B.Unknown what to do to C.Our knowing not how to D.Our not knowing how to 答案与解析:D 非谓语动词的否定形式要求not要放在前面.如not having done sth..如果这个非谓语动词有其逻辑主语.则要放在最前面.如his not having done sth..句意为:我们不知道怎么帮助南方那些遭受雪灾的人们让他很着急.故选D.

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