—Be quiet, Mr. Smith is coming.—Don’t worry. It _____ be him. Mr. Smith is much taller.A. mustn’t B. must C. can’t
—Are the beaches in Dalian beautiful? —Sure. They___________ lots of tourists from home and abroad every year.
Today there are two new students in our class. I don’t know ______ of them.
—Is that all? —Yes. That’s all ______ I want to take.
—I have ______ completed all the work. —Congratulations!
What is a machine that is used to cool the air in a room by moving it around?