单项选择题

Have you. ______ your best I'm afraid you'll have to do it again.

[A] tried
[B] made
[C] showed

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单项选择题

Tom has ______ back the money he borrowed from me yesterday.

[A] brought
[B] given
[C] taken

单项选择题

You look tired, ______ don't you have a rest

[A] Why
[B] What
[C] How

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