1. break __________ (破门而入)

10. The step mother t_________ the gril better than her own child.

9. The workers try to r_________ their cost to make profits.

8. It is quite d________ to drive when you are drunk.

7. They have i__________ the price of petrol by 10 percent.

6. He is so helpful because he always o__________ to help others.

5. You will be ____________(上瘾)to the drug if you keep on taking it .

4. It is _________(非法的)to hunt rare animals such as the giant panda.

3. It is the job of the police to prevent _________(犯罪)。

2. Smoke _______( 影响)health, so you'd better give it up.