Her work is often very hard and she gets very tired. The work is _____.
Obviously, the parents' bad behavior will have a negative __________ on their children.
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.