A：Can I help you？
B：.
A：How long have you been like this？
B：Since two weeks ago.
A：Let me have a look..
B：I work in an office.
A：Do you play computer games？
B：Yes，a lot.
A：Mm，that's it.
B：.
A：Nothing serious.You spend too much time in front of the computer.
B：What can I do？
A：Don't play computer games too much.
B：OK，I'll take your advice.Thank you.
A.I usually play computer games late at night.
B.I want to buy some music CDs.
C.What's wrong with me？
D.Where do you work？
E.Stand up and do some exercise from time to time.
F.Well，I have a sore back.
G.Do you have breakfast？
