补全对话,方框中有两个选项是多余的

补全对话,方框中有两个选项是多余的
A.Good morning.
B.Yes,it is.
C.where are my keys?
D.Is it on the sofa?
E.No,they aren't.
F.are the keys on the sofa?
G.Bye-bye.
A:Mom,where is my backpack?
B:1.________.
A:No,it's not on the sofa.
B:Is it on your bed?
A:2.________.It's here.Thank you ,mom.But 3.________.
B:Are they in the drawer?
A:Let me see.4.________.
B:Are they in your backpack?
A:Yes,they are.
B:I am going to school,goodbye,mom.
A:5._________.