________ was unknown to us, he always said, was how the teacher knew the secret.[ ]A.ItB.WhatC.ThatD

题目简介

________ was unknown to us, he always said, was how the teacher knew the secret.[ ]A.ItB.WhatC.ThatD

题目详情

______ was unknown to us, he always said, was how the teacher knew the secret.

A. It  
B. What
C. That  
D. As
题型:单选题难度:中档来源:同步题

答案

B

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