We must be strict ________ ourselves. —I think so.

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

Miss Li ________ as a biology teacher for fifteen years in our school, and now she is Party secretary of our city

153 — How did you know that I won — Ijust from the look on your face I am notso sureguessed

－Must I finish my homework today－No, you _____. You can finish it tomorrow.