根据上下文填空。
(1)A: Hello!
B: Hello!
A:
B: hungry. I a cake?
A: This is you.
(2)A: this?
B: It’s a clock
A: the ?
B: It’s 7:30.
(3)A: your pencil case?
B: No,
A: open the pencil case.
B: All right.