( )| A．Goodbye, Wang Yong. | B．Good morning, Wang Yong. |
| A．Good morning. | B．Good afternoon. |
| A．Bye-bye, Daming. | B．Hello, Daming. |
| A．再见，小强。 | B．早上好，小强。 | C．你好，小强。 |
| A．Good morning, Mr Li. | B．Good afternoon, Mr Li. | C．Goodbye, Mr Li. |
| A．boy and girls | B．boys and girls |
| A．Good afternoon, Amy. | B．Good morning, Amy. |
| A．Hello. | B．How are you? | C．Bye-bye, Ms Smart. |
| A．Goodbye! | B．Good morning. |
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