Only those knew well could be let in.A. whoB. whichC. whatD. he

发布时间：2020-08-16 21:38:19

Only those     knew well could be let in.
A. who
B. which
C. what
D. he

网友回答

(答案→)A. who
B. which
C. what
D. he
解析：考查定语从句。当先行词是those指人时，且关系代词在句子中做主语时，使用who.句意：只有那些很了解的人才可以被放进来。
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