I don’t know ________ is in charge of English department.
| A．that | B．which | C．who | D．where |
--- What else do you want to know about the cell phone?
--- _______ it can be used as a digital camera. You know, I’m into photography.
| A．Whether | B．What | C．That | D．How |
The old man stood there with his eyes ______ on the picture.
| A．to focus | B．focusing | C．focused | D．focus |
Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
| A．of; at | B．by; in | C．of; on | D．on; at |
---I’m going out tonight.
---Well, I’d rather you ______.
| A．not | B．aren’t | C．didn’t | D．won’t |
Bitten twice, the postman refused to ______ our letters unless we changed our dog.
| A．deserve | B．deliver | C．expand | D．direct |