| A．Hi, Sam. | B．Hello, I’m Sam. |
| A．Good morning. | B．Good afternoon. |
| A．Good afternoon. | B．good afternoon. |
| A．I’ m | B．I |
| A．Goodbye! | B．I’m fine. Thank you. |
| A．Hello. | B．Goodbye. | C．Good morning. |
| A．Goodbye | B．Hello | C．I’m Bobby. |
| A．Good afternoon, Yang Ling. |
| B．Good morning, class. |
| C．Good afternoon, class. |
| A．Good morning. | B．Good afternoon. | C．Goodbye. |
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