_____ we were singing, the teacher came in.
| A．Before | B．after | C．As | D．Until |
He was told that it would be at least three more months ___________he could receover and return to work.
| A．when | B．before | C．since | D．that |
— Can the project be finished as planned?
— Sure. it completed in time, we’ll work two more hours a day.
| A．Get | B．To get | C．Getting | D．Got |
The two sportsmen congratulated each other______winning the match by shaking hands.
| A．with | B．on | C．in | D．to |
The travel costs ____ 2,000 dollars.
| A．reach as many as | B．are added up to | C．come to | D．add up |
Jack is good, hard-working and intelligent. _____, I can’t speak too highly of him.
| A．In a word | B．As a result | C．In other words | D．Above all |