听力原文:M: How do you go to school every day?W: I go to school on foot.M: Why not go by b
听力原文:M: How do you go to school every day?
W: I go to school on foot.
M: Why not go by bike?
W: It is not safe I think.
Q: Why does he go to school on foot?
(17)
A.It is safe.
B.It is convenient(方便的).
C.It is easy.