Помогите пожалуйста. ​

a) am i at work? Is Mike a doctor? Are they glad? Is my mother in the garden?

Are my friends happy? Is Susan in that room? Is Olga my friend? Are Mary and Alex at home? Am I sure of it? Is this book interesting?

б) I am not glad. Mike is not a doctor. They are not glad. my mother is not in the garden. My friends aren't happy. Susan is not in thаt room. Olga isn't my friend. Mary and Alex aren't at home. I am not sure of it. This book isn't interesting.