If you want to keep _______, You _______ do more exercise and eat less.

— Simon, when are we going to have a class meeting this week?— Sorry. Ask our monitor, please. He         know.

-----Who ______ it be that hasn’t handed it in yesterday? ------It _______ be Bob. He handed it in yesterday.

--- We want someone to design the new art museum for us.--- ____ the young fellow outside have a try?

—Can you keep a secret?—You ________ worry—I'm not going to mention it to anyone.