—Silly me! ________
—________.
— ______________. ( )
in on under
⑴Is it in your bag?
⑵Where is my car?
⑶What's in the desk?
⑷Have a good time.
⑸Who's that boy?
A.He's my brother.
B.Yes, it is.
C.Thanks, Mum.
D.My ruler.
E.It's under the chair.
A.Thank you very much.
B.Bye!
C.It's in the pencil box.
D.Great!
E.No,it isn't.