is certain, though, is that the mystery of Tutankhamun’s tomb has never been fully explai

发布时间：2020-08-16 14:16:24

     is certain, though, is that the mystery of Tutankhamun’s tomb has never been fully explained.
A. It
B. What
C. This
D. As

网友回答

A. It
(答案→)B. What
C. This
D. As
解析：考察主语从句，“可以肯定的是Tutankhamun’s tomb的迷从来没有充分解释过。”答案B。
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