---How can you keep slim as a mother of two sons?
---I _______ in the gym for years.
| A．have worked out | B．have been working out |
| C．have worked on | D．have been working on |
Days later, I tried to get my sister to tell me what was going on, but she ________ say anything.
| A．mustn't | B．shouldn't |
| C．wouldn't | D．mightn't |
—Can I pay the bill by check?
—Sorry, Sir. According to the rules of our hotel, the payment ________ be made in cash.
| A．shall | B．need |
| C．will | D．can |
It was terrible. The car ________ break down just as we were going on our holiday.
| A．should | B．would |
| C．could | D．must |
—Mum, I'm tired.
—Well, if you ________ go to bed after midnight every night, what do you expect?
| A．will | B．may |
| C．should | D．can |
The children ________ lost in the woods; otherwise, they would have been at the lakeside camp as scheduled.
| A．must have got | B．must get |
| C．should have got | D．should get |