口语交际

A. This is my sister, B. Who's that girl? C. How old are you? D. Nice to meet you too.

Su Hai: Good afternoon, Yang Ling.

Yang Ling: Good afternoon, Su Hai. 

Su Hai: , Su Yang.

Yang Ling: Nice to meet you, Su Yang.

Su Yang:

Yang Ling:

Su Yang: I'm eleven. We're twins!