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?

When ______ you ______ reading Jane Eyre—It’s hard to say. I’m busy recently.

Kate is watching a music show TV.

that, he knew he could _________ any emergency by doing what he could to the best of his ability.

―Could I smoke here―I’d prefer _______if you don’t smoke in front of thechildren