Mr. Green will arrive here and give us a speech ___________ the morning of December 22nd.

When did you ____staying up so late?— When I entered this school two years ago, where students have too much homework to do.

College students want to find jobs ________ they can receive not only good pay but also a sense of satisfaction.

Why don’t you put the meat in the fridge？It will________fresh for several days.[ ]

Sally is ill. Do you know what’s the matter with her —Poor girl. Her illness is the_________ of eating unhealthy food.