单项选择题

To do a task promptly is better than（）about it.

A、 worry
B、 to worry
C、 worried
D、 worrying

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单项选择题
I have a terrible（）in my chest. When I cough, it really hurts.

A、 pain
B、 ache
C、 wound
D、 injury
单项选择题
He's not such a fool（）he looks.

A、 who
B、 as
C、 whom
D、 that
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