______ around the clock for two days，David managed to finish the report for the manager on schedule.

I’m going to attend a job interview Would youlike to tell me something about your experience— ______ Let me tell after class

Must I return the book tomorrow— No, you ________. You can keep it for three days.

.____ the temperature falling so rapidly, we couldn’t go on with the experience.

The government decided to tear down the old bridge, which was not strong enough to allow the ___ of heavy vehicles (车辆).