Conversation 1

Man: Do you know where Kate is?
Woman: She said she had an appointment. She left about an hour ago.
Man: Oh, I see. I need the keys to the safe. Do you know when she'll be back?
Woman: Yes, she said she’ll be back after lunch.
Man: Oh! I can't wait that long. Do you know where she keeps the keys?
Woman: In her desk, but it's locked. However, I think Bob has a set of keys.
Man: OK, great. I'll go ask him.

Conversation 2

Woman: Excuse me, do you know where the library is?
Man: Yes, it's on the other side of campus. It's about a ten-minute walk from here.
Woman: Do you know when it closes?
Man: I think it's open 24 hours, but you'd better check.
Woman: Do you know if there’s a bus that goes there?
Man: Yes, you can catch the campus shuttle by the cafe. It goes straight to the library.
Woman: Do you know how often it comes?
Man: I'm not sure, but I think it comes fairly often.
Woman: Great. Thanks for your help.
Man: No problem at all.

Conversation 3

Man: Do you know when the meeting is?
Woman: It's at 3:30.
Man: Do you know what it's about?
Woman: I'm not sure.The memo didn’t say much. Just that it’s urgent.
Man: Where is it? I can’t remember.
Woman: It's in Meeting Room 10.
Man: Do you know how long it will take?
Woman: The memo said an hour.
Man: An hour? Do you really think it will take that long?
Woman: I doubt it, but you never know.

Conversation 4

Man: Susan, do you know what this machine is?
Woman: Yes, it’s a laminator.
Man: Do you know what it does?
Woman: Yes, it laminates paper. Laminate means to cover with plastic.
Man: I see. Do you know how to use it?
Woman: Not really, I’ve never used it.
Man: Do you know who might?
Woman: I think Jill does. I’ve seen her use it before.
Man: Cool. I’ll ask her if I ever want to use it.

Grammar

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