The light in his room is still on. Do you know _________— To prepare for the coming exam, I think.

The happiest people don’t have the best of everything. They just _______ everything.

We ________John’s name on the race list yesterday but for his recent injury.(2011·江西)

Persons under18 not be employed in night work in the United States.

How often doyou drink milk —I don’t like it, so I _____drink it.