Ⅰ、1、Chinese
2、where
3、about
4、years
5、our
Ⅱ、6、How old is
7、What is your
8、Is this
9、Yes，it is
10、Is your friend in Class 6?Yes，he/she is
Ⅲ、11-15：B B A C C
16-20：C B B B A
21-25：B D C A B
Ⅳ、26、our friends
27、Welcome
28、What about watching
29、nine years old
30、Lingling's