Write true short answers. are you at home? is yor pen blank? are your frlends at school? ls yor english teacher spanish? is pizz your favourite food?

Are you at home? - Ты дома?
Is yor pen blank? - Твоя ручка черная?
Are your frlends at school? - Твои друзья в школе? 
ls yor English teacher Spanish? - Не понятный вопрос. 
Is pizz your favourite food? - Твоя любимая еда - пицца?

Yes, I am.
No, it isn`t.
Yes, they are.
No, he/she is not.
Yes, it is.