Is this your shirt?
| TEACHER: | Whose shirt is that? |
| TEACHER: | Is this your shirt, Dave? |
| DAVE: | No, sir. It's not my shirt. |
| DAVE: | This is my shirt. My shirt's blue. |
| TEACHER: | Is this shirt Tim's? |
| DAVE: | Perhaps it is, sir. Tim's shirt's white. |
| TEACHER: | Tim! |
| TIM: | Yes, sir? |
| TEACHER: | Is this your shirt? |
| TIM: | Yes, sir. |
| TEACHER: | Here you are. Catch! |
| TIM: | Thank you, sir. |