Passage One Questions 26 to 28 are based on the passage you have just heard.

A．Teach David’s class while he is absent.
B．Give Professor Winston the key to David’s office.
C．Leave a message on the board in David’s classroom.
D．Bring David the homework that was due today.

A．To tell us that accidents may take place at any time.
B．To prove that buying insurance is a wasted investment.
C．To prove that it is wise to spend money on insurance.
D．To tell us that the sense of security is very important in driving.