—Are these ______？
—No，______.
| A．their parents; they aren't |
| B．their parents; aren't |
| C．his parents; they are |
| D．their parents; their aren't |
My mother is ill. I _______ stay at home to take care of her.
| A．can | B．may | C．have to | D．maybe |
I feel terrible. I don’t feel like _______.
| A．eating anything | B．anything to eat |
| C．eat anything | D．to eat anything |
—Watching TV too much _______ bad for your eyes.
—I’ll go to bed right away.
| A．is | B．are | C．was | D．be |
Our teachers often tell us _______ the net bar.
| A．stay away from |
| B．to stay away from |
| C．not stay away from |
| D．not to stay away from |
—Must I take the medicine every day?
—No, you _______.
| A．must | B．mustn’t |
| C．needn’t | D．can’t |