1.Are you write your essay at the moment?
2.She doesn't has her books with her today?
3.Do you study for your exam now?
4.Why are you and Joe walk to school today?
5.Do your brother play in the basketball team?
6.My cousin studies at this school.(Здесь нет ошибки)
7.We are having two bikes at the moment.
8.What do you do now?I am listening to my MP3 player.