Do you have any idea on earth has happened to our friend?A. thatB. whatC. asD. which

发布时间：2020-08-16 21:04:57

Do you have any idea      on earth has happened to our friend?
A. that
B. what
C. as
D. which

网友回答

A. that
(答案→)B. what
C. as
D. which
解析：考查同位语从句。what on earth has happened to our friend是一个同位语从句解释前面的idea, what在句中做主语。句意：你知道我们的朋友究竟发生了什么事情了吗？
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