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surprised us most Tom should have left without a word.A.He; whyB.It; thatC.This;

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surprised us most Tom should have left without a word.A.He; whyB.It; thatC.This;

_______ surprised us most ______ Tom should have left without a word.

A.He; why

B.It; that

C.This; what

D.That; that

试题答案

B

it为形式主语,that从句为主语从句,说明it的真正内容。