—As we know, you won’t go back to the USA since you have established a research center here．But how long _____ in America?
—For almost 10 years．
| A．did you study | B．have you studied |
| C．were you studying | D．have you been studying |
1don’t search my book case for your CD-player! Just look where it bein the drawer, in your schoolbag, or somewhere else like that.
| A．may | B．can | C．must | D．will |
I wish it be fine tomorrow.
| A．is going to | B．will | C．should | D．would |
It is very kind of you to do the washing-up, but you it.
| A．mustn’t have done | B．wouldn’t have done |
| C．mightn’t have done | D．didn’t have to do |
---Let’s see if the basketball game has started yet.
---Started? It must be clear who by now.
| A．is winning | B．wins | C．has won | D．would win |
---Are you still going to Shanghai for the Spring Festival?
---Yes, but I really because I have a lot of things to deal with.
| A．can’t | B．mustn’t | C．won’t | D．shouldn’t |