补全对话：选择方框中的句子补全对话，有两项多余。
（共5小题，每小题2分，满分10分）
A: Where does your mother work?
B:     
A:     
B: Usually she rides a bike. Sometimes she takes a bus.
A:    
B: About 15 minutes.
A: What about the bus?
B: Wow! That’s a long time.    
A:    
B: Because there are too many cars and buses on the road（路）.
A: Oh, I see.