单项选择题

M: Hello, Mary. Why are you standing here
W: I’m waiting for a bus. The buses are so full at this time of the day.
M: Sure. Where are you going I don’t think this is your way home.
W: You are right. I’m going for a walk in the park.
M: Going for a walk even after along day’s work
W: Yes. I always enjoy walking alone in the park after work.
M: I see. Then why not go there on foot It’s not so far from here.
W: Oh, no. I hate walking through the streets.

What is Mary doing at the beginning of the talk().

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