1, Mike's hobby is listening to music. He gets a lot enjoyment from listening to music. (enjoy)

2, John is a stamp collector. He has a lot of rare and valuable stamps. (collect)

3, One third of children in the U.S. is overweight or obese.(weigh)

4, I have toothache so I must go to a dentist.(tooth)

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

6, Blood donators give blood for use in hospitals.(donate)

7, They aren't forced to do charity work. They do it voluntarily.(volunteer)

8, They opened a shelter to provide housing for the homeless.(home)