A.Hello, Miss Li. | B.Hello, class. |
A.Good morning, Miss Li. | B.Good afternoon, Miss Li. |
A. Good morning, class. B. Hi, I’m David. C. Good afternoon, I’m Helen. D. Hello. E. Good afternoon. |
A.Good afternoon, Miss Li. | B.Good afternoon, class. |
A.Hello, Mike. | B.Hi, Wang Bing. |
A.Good morning. | B.Good afternoon. |
A.Good afternoon, Miss Li. | B.Good afternoon, class. |
A.Hi, Wang Bing. | B.Hello, I’m Wang Bing. |