单项选择题

—You didn't wait for Mr. Black last night, did you
—No, but we（）. He didn't return home at all.

A. couldn't have
B. needn't have
C. didn't need to
D. should wait have

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单项选择题
A terrible earthquake happened in that district at the end of 2004,（）many countries in the world paid close attention to this.

A. where
B. when
C. which
D. what
单项选择题
—What's the matter with Tim —Oh, Tim's cellphone was left in a taxi accidentally, never（）again.

A. to find
B. to be found
C. finding
D. being found
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