He tries to spend as much time as he can ____ Chinese well.
A to study B studies C. studying D. study
—Oh, you have a headache and a cough. _______ have you been like this?
—Three days.
| A．How long | B．How soon | C．How often | D．How many |
—I had a backache. I can’t sleep.
—_______
| A．Don’t worry. | B．Not so well. | C．I’m sorry to hear that. | D．Why? |
If you have a headache, you _______ lie down for a good rest.
| A．shouldn’t | B．had better not | C．had better | D．mustn’t |
You _______ eat too many candies. It’s bad for your teeth.
| A．must | B．can | C．should | D．shouldn’t |
—What’s the matter with you, Jim?
—_______
| A．I’m fine. Thanks. | B．I’m good at English. |
| C．I have gotten a toothache. | D．I’m having a rest. |