补全对话：选择方框中的句子补全对话，有两项多余。
A: Where does your mother work?
B: 1.
A: 2.
B: Usually she rides a bike. Sometimes she takes a bus.
A: 3.
B: About 15 minutes.
A: What about the bus?
B: Wow! That’s a long time. 4.
A: 5.
B: Because there are too many cars and buses on the road（路）.
A: Oh, I see.
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