You _ to the meeting this afternoon if you have something important to do.

--- 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?

—What do you mean by this?—No need for you to worry about your money and be angry with me. You ______get it this afternoon.

—Catherine,  I have cleaned the room for you.—Thanks. You_______ it.  I could manage it myself.

— Must I finish the exercise at school? — No, you don’t have to. You          do it at home.