. The post-Expo fate of foreign pavilions,especially those _____ tens of millions of dollars, has aroused strong interestamong the public.

I’ve become good friend with several of the student in my school _______I meet in the English speech contest last year.

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?

If you let pressure benefit ________upset you，much more can be accomplished than you thought possible

Fifty dollars for such a T-shirt！You_____ be joking！— I’m serious. It’s made of silk.