阅读以下对话，选出所给问题的正确答案。
Wu Yifan: Excuse me, how can I get to the zoo?
Policeman: Are you going on foot?
Wu Yifan: Yes.
Policeman: Turn left at the library. Then go straight to the traffic lights. Turn left at the school. That's Shengli
Street.
Wu Yifan: OK. Then what?
Policeman: Walk straight for three minutes. The zoo is on the right. You can see it.
Wu Yifan: Thank you very much.
Policeman: You are welcome.
1. — How does Wu Yifan go to the zoo? — He goes to the zoo ____________.
A. on foot
B. by bike
C. by bus
2. When (当……的时候) he gets to the library, he should ____________ the traffic light.
A. turn left at
B. go straight to
C. turn right at
3. The zoo is ____________ of Shengli Street.
A. on the left
B. in the middle
C. on the right
