I _____ frustrated when I wasn't sure of the correct answer.[ ]A. may be B. used to C. used to be D. use to be-初中英语-n多题

◎ 题干

I _____ frustrated when I wasn't sure of the correct answer.

[ ]

A. may be
B. used to
C. used to be
D. use to be

◎ 答案

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“I _____ frustrated when I wasn't sure of the correct answer.[ ]A. may be B. used to C. used to be D. use to be…”主要考查了你对【一般过去时】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

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