— Do you think I should join the singing group, Mary?
— ________ If I were in your shoes, I certainly would.
| A．None of your business. | B．It depends. |
| C．Why not? | D．I don't think so. |
The weather turned out to be fine yesterday. I __________ the trouble to carry my umbrella with me.
| A．should have taken | B．could have taken |
| C．needn’t have taken | D．mustn’t have taken |
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 |