Jane: Have you two met each other before?
Kelly: __A__
Ben: __B__ We went to see John at the same time.
A. 1. Is that so?
2. I’m sorry, I don’t know.
3. Oh, yes. John introduced us.
4. I don’t think I have ever seen him.
B. 1. John is our old friend.
2. It was all right. We met John.
3. That’s right. We met in John’s office.
4. John was right. He knows both of us.