Mary 1ooks down today．What is up？—Well，_________happened between Mary and me is none of your business．

______, there must be life on other planets though none has been discovered.—I agree with you. The universe is so large after all.

Who would you rather ______ with the teacher about the problem

turn off the light and lock the doorbefore you leave — ______

I can’t work out this math problem. Can you tell me