Как образовать вопросительную форму his friends are very busy now robert have a nice living-room in his flat my sister is an accountant on our firm we have two lectures and two seminars evry day she have a nice puppy

Are his friends very busy now?
Does Robert have a nice living-room in his flat?
Is my sister an accountant in our firm?
Do we have two lectures and two seminars every day?
Does she have a nice puppy?