补全对话。
A: 1______ me, Bill. Can you 2______ me? I can't find 3______ pencil.
B: Isn't it 4______ your bag?
A: No, it 5______.
B: Please look 6______ it's under the desk.
A: Oh, it is over there. Thank you very 7______.
B: 8______ all 9______.
A: It' s time 10______ go to the classroom.
B: Let' s go.