—Mum, would you please buy me an MP5 player?—If you can help do the dishes the whole vacation, you ________ have one as a reward.

Today is Wednesday. He _____ be at home. He _____ be at school.

—____ you please tell me your name?—Sure. I’m Linda.

--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?

 You_______ play with fire, Tom. It's dangerous.