单项选择题

He's ______ enough to stand all the hardships.

A．tough
B．rough
C．crude
D．hoarse
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单项选择题
According to the doctors, if there were no ______, they would probably cure the disease.
A．complexities
B．completions
C．compliances
D．complications
单项选择题
He must have been very depressed when he heard the news, ______
A．mustn't he
B．haven't he
C．wasn't he
D．didn't he
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