---The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?
---____ my students have a try?
| A．May | B．Must | C．Will | D．Shall |
Professor Li, who I _________ abroad, still teaches in Peking University.
| A．think went | B．think to have gone | C．thought went | D．thought had gone |
--Was it two months ago_____you luckily got an opportunity to spend your holiday in Hawaii?
--____________. John was the lucky dog.
| A．when; Not I | B．when; Not really | C．that; Not this | D．that; Not me |
We can’t wait. We have to_________ the direction and the distance before we take action.
| A．let out | B．figure out | C．try out | D．turn out |
Don’t you know that the famous university is as a matter of fact _________used to be a church?
| A．where | B．what | C．which | D．one |
_________ the car after drinking alcohol, there wouldn’t have been the accident.
| A．Had he not driven | B．Hadn’t he driven |
| C．If he didn’t drive | D．If he doesn’t |