Sam: Look, this is my mother, Ms Smart.
Lingling:
1．Sam: This is my father.
2．Lingling:
3．Sam: No, it isn’t.
4．Lingling: Who is that boy?
Sam:
5．Lingling: How old is he?
Sam: He is two.
| A．Is this your sister, Amy? |
| B．That’s my brother, Tom. |
| C．That’s me. |
| D．And she’s my teacher. |
| E．He is a doctor. |
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