30. --- Mrs. Smith, please teach me how to draw on the computer today.
--- Oh, no._______. You have to get familiar with the keyboard first.
| A．It is never too old to learn | B．Think twice before you do |
| C．Learn to walk before you run | D．One today is worth two tomorrows |
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 |
I want to buy that kind of cloth because I ______ the cloth ______ well.
| A．have told; washes |
| B．have been told; washes |
| C．was told; washed |
| D．have been told; is washed |