根据下面对话中的情景,  在每个空中填入适当的语句, 使对话恢复完整.

A: Excuse me, sir.

B: __1__.

A: Could you tell me the way to the train station? I'm new here.

B: Sure. Go down this road and take the third turning on the right to East Road. Walk on until you

    reach the end. __2__ a big supermarket. The train station is on its left.

A: __3__?

B: It's about half an hour's walk.

A: Half an hour's walk is really a long way. __4__?

B: Yes. The No.3 bus will take you right there.

A: I'd like to take it. Thanks a lot.

B: __5__.