Question

Change into questions interrogativa .

They are my friends
Ian is a basketball player
We are in front of the shopping center
She is ouro biology teacher
I am the english teacher
He is in the cafeteria
They are in the library preparing a speech
That is my friend harry

Answer 1

É fácil, é só colocar todos os verbos to be (am, is, aree) no começo de cada frase e colocar o ponto de interrogação no final.
Exemplo:
Are they my friends?
O resto vc consegue 

Answer 2

Are they my friends?
Is Ian a basketball player?
Are we in front of the shopping center?
Is she ouro biology teacher?
Am I the english teacher?
Is he in the cafeteria?
Are they in the library preparing a speech?
Is that my friend Harry?