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 ...