— Oh, Mary! I ________ you.
— No surprising. The first time you met me, I was only a little girl.
| A．don’t recognize | B．hadn’t recognized |
| C．haven’t recognized | D．didn’t recognize |
Nobody noticed the thief slip into the house because the lights happened to__________.
| A．put up | B．give in | C．be turned on | D．go out |
—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 |