----I’ve got to go now.
---Must you? I you could stay for dinner with us.
| A．think |
| B．thought |
| C．have thought |
| D．am thinking |
You know he is not going to let us leave early if we __________ get the work done.
| A．can’t | B．may not |
| C．shouldn’t | D．mustn’t |
There’s no light on — they __________ be at home.
| A．can’t | B．mustn’t |
| C．needn’t | D．shouldn’t |
— Could I have a word with you, mum?
— Oh dear, if you __________.
| A．can | B．must |
| C．may | D．should |
—Is Jack on duty today?
—It __________ be him. It’s his turn tomorrow.
| A．mustn’t | B．won’t |
| C．can’t | D．needn’t |
As you worked late yesterday, you __________ have come this morning.
| A．mayn’t | B．can’t |
| C．mustn’t | D．needn’t |