He commanded that the students ______ the classroom before he returned.
| A．not leave | B．didn’t leave |
| C．wouldn’t leave | D．doesn’t leave |
You will never gain success ______ you are fully devoted to your work.
| A．when | B．because |
| C．unless | D．after |
The boys, who _____ their homework, were allowed to play basketball on the playground.
| A．will finish | B．finish |
| C．have finished | D．had finished |
—People often don't appreciate what they have, do they?
—No, _________ they lose it.
| A．if | B．after | C．until | D．when |
— Where were you last night? We had a wonderful party.
— Oh, ________ If you had called me, I wouldn’t have gone to the cinema.
| A．What a shame! | B．Who cares? |
| C．bad luck! | D．What a coincident! |
The white building, ______threats to pull it down, is now a private house in the possession of a retired professor.
| A．having survived | B．surviving |
| C．to survive | D．survived |