I.  Choose the best answer to complete the following sentences.

1. Fruits are very useful (for/to/in/about) our health.

2. My sister is a very (cooker/cook/cooking/cooked).

3. I felt (tire/tiring/tired/happily) after a hard working.

4. What (so good/such good/a good/good) advice she gave us!

5. “I’m sorry about that!” – “That’s right/Of course/It’s OK/You’re welcome)!”.

6. The country is (getting/going/changing/doing) busier and noisier.

7. After a month, Hoa got used to (studying/study/studied/is studying) in her new school.

8. Would you mind if I  (smoking/smoke/smoked/to smoke) in the room ?

9. Have you got a car (of your own/of yourself/of you/of your)?

10. The number of high buildings (is/are/have/has) risen.