1 : hooked on

2 : check out

3 : right on

4 : look at

5 : to

6 : addicted on 

7 : after

8 : looking on

9 : to

10 : harmful for

1. I first got hooked on video games when I was eight.
2. The library allows you to check out six books at a time.
3. Carpentry isn't right up my street. I'd rather pay someone else to do it.
4. Could you help me look for my contact lens?
5. What do you usually do in your leisure time?
6. A lot of kids nowadays have become addicted to surfing the net.
7. We work as volunteers for an animal protection organization.
8. He spends most of his free time looking at the garden.
9. Today, teenagers rely on technology more than in the past.
10. Surfing the Net too many hours can be harmful to your health.