---Look! The telephone is broken. Someone damaged it ________ purpose.
---That may be right. But perhaps it was broken _________ accident.
| A．on; by | B．by; by | C．on; on | D．by; on |
---Are you still going to Shanghai for the Spring Festival?
---Yes, but I really __ because I have a lot of things to deal with.
| A．can’t | B．mustn’t | C．won’t | D．shouldn’t |
---Look! The clouds are gathering.
---Yes. I’m afraid it __ be pouring down soon.
| A．can | B．must | C．should | D．might |
The poor boy __ the test again; in that case, his mother will be very disappointed.
| A．must have failed | B．might fail | C．could have failed | D．should fail |
It’s said that there are plenty of hotels in that town. There___ be any difficulty for you to find somewhere to stay.
| A．wouldn’t | B．mustn’t | C．shouldn’t | D．needn’t |
I ___have written to him because he phoned me shortly afterwards.
| A．ought to | B．must | C．couldn’t | D．needn’t |