помогите пожалуйста номер 3 и 4

#3
1)  I am a student
2) ...aren't in....
3) ...isn't...
4) ..is in...
5) I'm not from...
6)  ..are from...
#4
1) His...
2) My mum's ...
3) Our...
4) ...cousins'.....
5) Its flag is....
6) Her first ...