---Look! That’s Amy.   ---It _______ be her. She’s gone to Xi’an.

If you want to book tickets for the 2012 Olympic Games, just call 00952012．It ______ be simpler．

---Must I finish doing my homework now, Mum?    ---No, you ________.

(2009·全国卷Ⅰ)What do you mean, there are only ten tickets？There________be twelve.

- These apples look very beautiful.- They ________. See the price $ 3.99 a pound. Very expensive, aren’t they?