Section A5
A.Buyer and seller.
B.Interviewer and interviewee.
C.Doctor and nurse.
D.Shop assistant and customer.
Section BConversation 1.6
A.He was too busy.
B.He got a new offer.
C.His company has closed down.
D.His company has moved away.
Conversation 1.7
A.To move to another city.
B.To do social work.
C.To have his own business.
D.To go to study abroad.
Conversation 2.8.
A.The chief engineer.
B.The sales manager.
C.The office secretary.
D.The manager assistant.