听下面5段对话。每段对话后有一个小题，从题中所给的A.B.C三个选项中选出最佳答案，并将其标号填入题前括号内。每段对话读两遍。
（ ）6.Why do more and more people go to work by bike ?
A. Because it’s a good way to save time.
B. Because it’s a good way to keep fit.
C. Because it’s a good way to save money.
( ) 7. What is Ann afraid of?
A. Riding a bike at night. B. Crossing the street. C. Driving a car.
( ) 8. When did th e accident happen ?
A. At 4:30 yesterday afternoon. B. At 4:30 this afternoon. C. At 10:30 yesterday morning.
( ) 9. How does the girl’s uncle go to work every day ?
A. By bus. B. By bike. C. By car.
