31．The fact that smoking is harmful to health ismost smokers are quite aware of．A. whatB.

发布时间：2020-08-16 06:18:01


31．The fact that smoking is harmful to health is    most smokers are quite aware of．
A. what
B. which
C. where
D. That

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(答案→)A. what
B. which
C. where
D. That
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