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______in a science competition, the three students were awarded scholarships totaling $ 21, 000.

As he was about to go out to search for Mary, she happened ____.

____of danger in the street at night, she had to go home, with a friend ___ her.

– What’s wrong with your ipad2? The sound ____is not clear.
--Yes. It has been broken for some time.

What he wants is _______ his mother as quickly as he can; and what he must do is ____ to the hospital at once．

In the reading-room, we found Winifred ____at a desk, with her attention _____on a novel．

____ to give up smoking, he threw away his _____ cigarettes．

While     in Scotland, he made friends with the natives there.

－Have you finished _______ your composition? It is time to hand it in.
－Not yet, I _______ it the whole morning, but it is so hard that I only finished half of it.

The_______ moment we had been looking forward to_______ last week.