1A:Kate graduated 2 years ago ,in middle school?
B:Yes,2 years ago
2A:This knife isn"t sharp,isn"t it?
B:Yes,is not sharpened
3A:-"- ,is not it?
B:Yes,terrible noise.
4A:-"-isnt it?
B:No,he likes
5A:-"-isnt it?
B:Yes,he liked
6A:-"- ,please?
B:Yes,i will be.Sorry!
7A:-"- isnt it?
B:Yes,you are