根据下面对话情景，在每个空白处填上一个适当的单词，使对话的意思连贯、完整。
A: Hi, excuse me.
B: Yes. How can I ____ you?
A: I'm new in town. Where is the Science Museum, please?
B: Go along Center Street and ____ right on Main Street. Then you'll see it on your left. It's across from the park.
A: Is it far from here?
B:____ , it's quite far from here. And you can take a bus.
A: Which ____ can I take?
B: The No. 5 bus.
A: Is____ a bus stop near here?
B: Yes, there is. I can walk with you.
A: Oh, that's great! Thanks so much.
B: No problem.
