In ____ accident _____ knowledge of first aid can make _____ real difference.
| A．the; a; the | B．an; a; a | C．an; the; 不填 | D．a; a; 不填 |
There was plenty of times. She _____.
| A．mustn’t have hurried | B．couldn’t have hurried |
| C．must not hurry | D．needn’t have hurried |
If you really want yourself to be in good health, you must ___ always ___ so much.
| A．not; be smoking | B．not; have smoked |
| C．not; to smoke | D．be not; smoking |
I didn’t see her in the meeting-room this morning. She____ at the meeting.
| A．mustn’t have spoken | B．shouldn’t have spoken |
| C．needn’t have spoken | D．couldn’t have spoken |
— Is John coming by train?
— He should, but he _____ not. He likes driving his car.
| A．must | B．can | C．need | D．may |
There was plenty of time. She ___.
| A．mustn't have hurried | B．couldn't have hurried |
| C．must not hurry | D．needn't have hurried |