Unit3 Section A
 1b Listen and number the Conversations .
Conversation 1
Girl:  Are these your books?
Boy:   No, they aren't. They're hers.
Conversation 2
Woman:  Is that your schoolbag?
Boy:    No, it isn't. It's his.
Conversation 3
Boy:   Is this your pencil?
Girl:  Yes, it is. It's mine.