You must give up_____. It’s bad for your health.
A. smoking B. smoke C. to smoke
--- Do you know the accident about the flight MH370?
--- Yes. It ______yet at present.
| A．isn’t found | B．didn’t find |
| C．wasn’t found | D．wasn’t founded |
---I saw Li Ming standing in the teachers’ office.
---Really? He _______ basketball with other boys on the playground just now.
| A．has played | B．was played |
| C．was playing | D．is playing |
--- Would you like _____ camp with me?
--- I’d like to. But I am busy ______ my homework.
| A．to go; to do | B．to go; doing |
| C．going; to do | D．going; doing |
--- Lin Tao, can I use your English dictionary?
--- Sure. But you _______ return it before the class.
| A．must | B．can |
| C．may | D．would |
--- What do you think of pollution of the big factory?
--- It’s a serious problem. We should _____ all the people to do something for it.
| A．put up | B．call up |
| C．set up | D．give up |