Better wear special clothing, a helmet and a life jacket, just ______ your raft gets upside down or even sinks.
| A．in case | B．so that | C．as though | D．in order that |
This magazine is very __________ with young people, who like its content and style.
| A．familiar | B．popular |
| C．similar | D．particular |
—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 |
— My cat’s really fat.
— You __________ have given her so much food.
| A．wouldn’t | B．couldn’t |
| C．shouldn’t | D．mustn’t |
— What does the sign over there read?
—“No person __________ smoke or carry a lighted cigarette，cigar or pipe in this area.”
| A．will | B．may |
| C．shall | D．must |
I told your friend how to get to the hotel, but perhaps I __________ have driven her there.
| A．could | B．must |
| C．might | D．should |