A.Mum, this is Tom friend. |
B.Mum, this is my friend Tom. |
C.Tom, this is my friend Mum. |
A.Mum, this is Wu Yifang. | B.Hi, John. |
A.Thank you, Peter. | B.Pleased to meet you. | C.Excuse me. |
A.Pleased to meet you. | B.Bye. | C.Yes, please. |
A.This is my friend John . | B.This is my cousin Li Ming. |
A.smaller | B.bigger | C.shorter |