二、1、2 - 4 - 1 - 5 - 3
2、① b
② c
③ a
④ d
3、①（b）
②（b）
③（a）
④（c）
⑤（b）
4、① my
② his
③ classmate
④ sister
⑤ Sit down
5、略
三、1、① This is my classmate.
② Her name is Sally.
③ Nice to meet you，Alice.
2、② my brother；His；Mike
③ This is my uncle. His name is George.
④ This is my dog. Its l His name is Tommy.
3、① Nancy
② tall
③ sing
④ brown
⑤ teacher
4、1）① Betty
② John
③ Betty
④ John
⑤ Betty
2）① c
② a
③ b