"It's such a nice," Mother said as she sat at the table ______ for customs. (2012.浙江)
After you have used the dictionary, please put it back ______ it belongs.
A wonderful idea suddenly occurred to me ______ I would turn to the reference book to finish my homework.
Never before ______ so highly successful in his attempts to forecast the weather accurately on a small scale.
There is not much time left, so I won't tell you about it ______ .
The moment we heard the news of the earthquake,we began to ______ the work to rescue those who were trapped in the building.