Thank you for all your hard work last week. I don’t think we it without you.
| A．can manage | B．could have managed | C．could manage | D．can have managed |
I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour.
| A．should have been doing | B．must have been doing |
| C．could have done | D．would have done |
I ______ have been more than six years old when the accident happened.
| A．shouldn’t | B．couldn’t | C．mustn’t | D．needn’t |
He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.
| A．should | B．must | C．wouldn’t | D．can’t |
John, look at the time. ______ you play the piano at such a late hour ?
| A．Must | B．Can | C．May | D．Need |
Tom, you _____ leave all you clothes on the floor like this !
| A．wouldn’t | B．mustn’t | C．needn’t | D．may not |