— The light is still on in his room. Do you know ?
— Maybe he has to study for a test.
| A．if he works hard | B．who he is studying with |
| C．what he is busy with | D．when he will stop working |
—It is selfless the doctor to devote all the time he had to caring for the patients.
—I think so, they are so great.
| A．for | B．of | C．with | D．to |
Of all my classmates, often goes to the Internet café to kill time.
| A．no one | B．none |
| C．nobody | D．everyone |
If we sit near front of the bus, we’ll have better view.
| A．/；the | B．/；a |
| C．the; a | D．the；the |
A. space B. camp C.safety
A. invite B. lively C. sick