What way can you think of ______ the mice in the room?

--- The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?---____ my students have a try?

Could I look at your picture?   --Yes, of course you ______.

_Can you write a letter in English? _No, I______.I know only a little English.

—Why are those people gathering in the middle of the street?—I don’t know. There ________ be an accident.