The door ________ open, no matter how hard she pushed.
| A．shouldn’t | B．couldn’t | C．wouldn’t | D．mightn’t |
Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.
| A．while | B．or | C．for | D．so |
—I wonder whom you are waiting for.
—The policeman _______ the traffic accident.
| A．dealt with | B．to deal with |
| C．will deal with | D．to be dealt with |
Jobs are hard to get and, _______, more young people are continuing their education.
| A．above all | B．as a result | C．on the contrary | D．after all |
—Tony, come down and help me with the heavy box!
— Come on! I _______ all day long．Get Peter to do that!
| A．work | B．had been working |
| C．had worked | D．have been working |
— I saw Mr Li at the meeting yesterday.
— Did you? He _______ have attended it, for he had asked for sick leave.
| A．needn’t | B．couldn’t | C．shouldn’t | D．mustn’t |