补全对话，其中有二项是多余的。
A: Hey, Susan!
B:      .
A: Is my computer game on the table?
B: No, it isn’t. It’s on the bookcase.                            
A: Oh, OK.    . Are they on the bookcase, too?
B:      . They’re on the chair.
A: Oh. So, where is my pencil case?
B:      .
A: And where’s my backpack?
B: It’s under the table. And your baseball is under the chair.
A: Oh, OK. And where are Mom’s keys?
B:     .

A．Yes!

B．Fine，thanks.

C．The keys? They’re on the table.

D．No, they aren’t.

E. Do you have a pencil？
F. How about my books?
G. It’s under the sofa.