完成对话。
A: (1) ?
B: Go down this street, take the third crossing on the left, Then go straight ahead. Go past the supermarkt.
Walk about three blocks. You will see the post office is between the bank of China and the bookstore.
A: (2) ?
B: It's about fifeen minuts' walk. It's late now. you'd better take a bus.
A: (3) ?
B: No. 49 bus.
A: (4) ?
B: It will take you about five minutes to get there.
A: Thanks a lot.
B: (5) .