| A．I’m sorry. | B．Sit down, please. | C．Come in, please. |
| A．Who’s that boy? | B．Who’s that girl? | C．Who’s this girl? |
| A．This is my sister. | B．This is my cousin. | C．He is my cousin. |
| A．She’s my mother. | B．She’s Helen. | C．He’s my cousin. |
| A．Yes, he is. | B．Yes, it is. | C．Is this your uncle? |
| A．This is Yang Ling. | B．This is my sister, Yang Ling. |
| C．That’s my sister, Yang Ling. |
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