It’s quite warm here; we __________turn the heating on yet.

You _________ drive so fast, for we have enough time to arrive at the station.

You had better ________some food and drinks before the field trip ________.

—David is often absent from class.—Tell him he ________ answer for it if he goes on behaving like that.

It’s nearly eight o’clock. I must hang up and get down to work. My boss________ be here at any moment.