根据上下文的意思，补全对话。

A: Hi, Li Yan! Have you ever been      1  _  the local library before?

B: You mean the one near the Dragon Tower?

A: That's the one.

B: I go to the English Comer in the library every Saturday. A lot of  English lovers practice 

    spoken English together. Why      2       you join us?

A: Sounds great! Could you tell me how to get there?

B: The No. 7 bus will take you right there.

A: How      3      is it?

B: It's about twenty minutes' ride.

A:      4      is the nearest bus stop?

B: Walk along the street, and take the first turning on the left. It's opposite the post office. 

    You can't       5      it.

A: Thanks a lot.

B: You're welcome.