Прошу, помогите. Надо написать 3 предложения в утв. отр.вопр форме в притяжательном местоимении, это очень важно, прошу вас!

1 Our school is new.

Is our school new?

Our school isn't new

2 My friend is a good student.

Is my friend a good student?

My friend isn't a good student.

3 Her picture is the best.

Is her picture the best?

Her picture isn't the best.