He always thinks________he can do more for the people.
Teenagers __________ their health because they play computer games too much.
The hotel is always full of people because it offers a friendly __________ and personal service.
-I'm going to San Francisco for a couple of days.-__________. I wish I could get away for a while.
-I love the Internet. I've come to know many friends on the Net.-__________. Few of them would become your real friends.
After the boy disappeared, the anxious relatives and friends spent months trying to __________ what had happened.