—No, it's not _______.
- No, it's not .
—It's(their/theirs).
—No, it's not ______. Ask Alan, Maybe it belongs to ______.
This can't be my sister's bike because her is blue.
A B C D
—Oh, it's ________. Thank you.
—No. It's not (I). It's (he).
—Certainly. But remember to return it on time.
—No, it isn't. It's ____.