My sister ______ an English teacher in our school. Now she works in America.

Very loud noises       make people ill. So we       make great noise.

—He can write well. ---He_____, but he doesn’t. He’s too lazy.

---- Is Ann knocking at the door?--- No, it ______ be Ann. She has gone to Beijing. 

— May I take the magazine out of the reading room? — No, you can’t. You _________ read it here. It’s the rule.