(Question)
Dialogue: W: Is this your book, Mike? M: No, it isn't mine. It's Sam's. Question: Whose book is it? - It's Sam's. - It's Mike's. - It's mine.
(Answer)
It's Sam's.

(Question)
Dialogue: F: Hi, John. Do you know where to find Bob? M: Oh, I don't know. But you can try this phone number. Question: What do you think the woman will do? - Go to see Bob. - Ring up Bob. - Wait for Bob to be back.
(Answer)
Ring up Bob.

(Question)
Dialogue: M: I'm afraid John's busy at the moment, madam. W: Oh, dear. John always does my hair. Question: What do we know about John? - John is a close friend of the woman's. - John is the best hairdresser in town. - John is a hairdresser.
(Answer)
John is a hairdresser.