B .
— Here you are.

①book A. 
② ruler B. 
③rubber C. 
①Give me a rubber, please. A. Goodbye!
②Good morning. B. Good morning.
③Goodbye! C. Here you are.
橡皮擦
B .
How nice !—
Goodbye!
|
⑴Give me a book, please. ⑵Here you are. |
A. Thank you. B. Here you are. |