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问题

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
正确答案是:
标签: frustrated , used
同类题型

Excuse me, are these ______ new shoes?—No, they aren’t. ______ are black over there.

Do you know whose magazine is it?— I think it be Lily’s, for we can find her name on the cover.

Nothing can live ______ air ______ water. [ ]

You’d better not shout at her. She’s only eight-month-old girl.

There two boys and a girl under the tree.

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