His shoes are cheaper than .

If I ______ you, I would represent the class in the school English speech contest.

Listen! Is Kitty in the next room? —- No, it ______ be Kitty. She has gone to Beijing.

A: How do you make fruit salad?B: ______ cut up three bananas and a watermelon.Next put them in a bowl.

Usually E-mail is_________ than long-distance calling．