—Which bus do I need _____?—Bus No.818.A.to sit B.to take C.sitting
—How long are you staying here? —That __________ the weather.
—I think a good friend should be __________ all his or her subjects. —I don’t agree. I don’t think grades are important in a friendship.
—When are you leaving __________ Beijing? —Tomorrow. I’m arriving in Beijing at 3:00.
—There is __________ salt in the kitchen now. —Why not go to the supermarket to buy some?
—Did your class win the match? —Guess what! We beat them 4-1. The teacher felt _________ with our performance.