—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?

 —Did you tell Rose about the test? —Oh, no, I forgot. I          call her now.

I_______ have watched that movie —it’ll give me horrible dreams.

—"I stayed at a hotel while in New York." —"Oh, did you? You _____ with Barbara." 

. If only I ________ how to operate an electronic computer as you do.