摘要：A: Excuse me. (1) Beijing Railway Station? B: Go along this street, and turn left at the third crossing. Go on walking and then turn right at the second crossing. A: (2) is it from here? B: About thirty minutes' walk. I think you'd better (3) . A: Which bus shall I take? B: The No. 20 bus. A: Where is (4) ? B: It's just over there. A: Thank you. B: (5) .

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