___ help the people in the snowstorm in the south made him worried._刷题宝

题干

___ help the people in the snowstorm in the south made him worried.

A：Not known how to

B：Unknown what to do to

C：His knowing not how to

D：His not knowing how to

上一题下一题 0.0难度选择题更新时间:2019-03-06 04:31:39

答案(点此获取答案解析）

D

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