—Can I pay the bill by check?
—Sorry, sir. But it is the management rules of our hotel that payment be made in cash.
| A．shall | B．should | C．can | D．will |
-What do you think we can do for our aged parents?
-You __________ do anything except to be with them and be yourself.
| A．don't have to |
| B．oughtn't to |
| C．mustn't |
| D．can't |
I can't leave. She told me that I __________ stay here until she comes back.
| A．can |
| B．must |
| C．will |
| D．may |
I __________ use a clock to wake me up because at six o'clock each morning the train comes by my house.
| A．couldn't |
| B．mustn't |
| C．shouldn't |
| D．needn't |
-__________ you interrupt now? Can't you see I'm on the phone?
-Sorry Sir, but it's urgent.
| A．Can |
| B．Should |
| C．Must |
| D．Would |
I am going to Europe on vacation together with John if I __________ find the money.
| A．can |
| B．might |
| C．would |
| D．need |