用括号内单词的正确形式填空。
1. There are _______ (twelve) floors in the building. I live on the _______ ( nine ) floor.
2. Why _______ (not use) the elevator?
3. Do you know how _______ (get) to the post office?
4. We decided _______ (go) shopping this afternoon.
5. Could you tell me whether there is a good place _______ (eat)?
6. She says she gets up _______ (early) in her family.
7. I'll visit the world's _______ (large) water slides.
8. All the _______ say that place is too _______ (tour)
9. She wanted _______ (change) the blouse because it didn't fit.
10. I like _______ (do) some shopping in the mall because things there are _______ (expensive).