．The silence of the library is sometimes broken by a sudden cough or the sound of pages _______.
| A．turning | B．turned | C．being turned | D．having turned |
. —I’m sorry. I _________ at you the other day.
—Forget it. I was a bit out of control myself.
| A．shouldn’t shout | B．shouldn’t have shouted |
| C．mustn’t shout | D．mustn’t have shouted |
. You don’t have to know the name of the author to find a book. You _________ find the book by the title.
| A．must | B．need |
| C．can | D．would |
. It is usually warm in my hometown in March, but it _________ be rather cold sometimes.
| A．must | B．can |
| C．should | D．would |
. —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 |