(1) Whose computer is it?
A)It's Sue's.
B)It's Bob's.
C)It's John's.
D)It's Bob's brother's. (2) Bob can't use the bike at the moment, can he?
A)Yes, he can.
B)No, he can't.
C)Of course, he can.
D)We don't know.
原文：
Bob: Is this your computer, Sue?.
Sue: No, it isn’t . It’s John’s.
Bob: May I use for a moment?
Sue: I am afraid not, Bob. My brother wants to use it now.