--I believe we've met before.

--No, ________. I've never been here before.

1. A.
   it isn't the same
2. B.
   it's true
3. C.
   I don't think so
4. D.
   I believe so

--- I believe we’ve met before.

--- No, ______. I’ve never been here before.

A．it isn’t the same    B．it’s true     C．I don’t think so    D．I believe so