_____ in the regulations that you should not tell other people the password.A.What is required B.What requires C.It is required D.It requires

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_____ in the regulations that you should not tell other people the password.
A.What is required B.What requires C.It is required D.It requires

答案C 考查it形式主语.本题的it是形式主语,真正主语是that you should not tell other people the password.查看原帖>>