1. Mike's hobby is listening to music. He gets a lot of enjoyment from listening to music. 

2. John is a stamp collector. He has a lot of rare and valuable stamps. 

3. One third of children in the U.S. is overweight or obese.

4. I have toothache so I must go to a dentist. 

5. Junk food is unhealthy, so we shouldn't eat too much junk food. 

6. Blood donation give blood for use in hospitals.

7. They aren't forced to do charity work. They do it voluntarily.

8. They opened a shelter to provide housing for the homeless.

HỌC TỐT ^^ @vietdorapan

=>
1. enjoyment
2. collector
3. overweight
4. toothache
5. unhealthy
6. donators
7. voluntarily
8. homeless