Ⅰ、1、aunt
2、grandma
3、uncle
4、sister
5、cousin
Ⅱ、6、Are these，sisters
7、No，they aren't
8、father，mother
9、Who is
10、Is this your
Ⅲ、11-15：B B C A B
16-20：C C A B D
21-25：B B A C B
Ⅳ、26、are，grandparents
27、Are those
28、What a beautiful
29、a photo of Tony's family
30、This is