单项选择题

In winter, animals have a hard time () anything to eat.

A. to find
B. to finding
C. to find out
D. finding

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单项选择题
As soon as children were (), their mother got them out of bed and into the bathroom.

A. woke
B. awoke
C. awake
D. woken
单项选择题
We can hardly avoid making any mistakes in our work () hard we try.

A. whatever
B. how
C. no matter
D. however
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