词汇运用：

1. There is less air ___________ (污染) in the country than in the city.

2. I was ____________ (惊讶) to meet my favourite star in the street.

3. Where is the ___________ (出口) to the new supermarket?

4. This sofa is very ___________ (舒适的) to sit on.

5. I can see many ___________ (顾客) in my cousin's shop on Sunday.

6. Mary is very happy because today is her _________ (twelve) birthday.

7. The children can't wait __________ (open) the presents.

8. The students usually walk out of the classroom _________ (quick) after class.

9. The girl is looking forward to _________ (buy) that new dress.

10. We would like everybody __________ (have) a good time there.