Помогите пожалуйста. Поставьте следующие предложения в отрицательную или вопросительную форму. 1.My pen is thin. 2. Kate is a teacher. 3. She is opening the exercise- book. 4. Jake is an engineer. 5. I m closing the door. 6. Tom is a good boy. 7. This is my book.

My pen isnt thin. Is my pen thin?
Kate isnt a teacher. Is Kate a teacher?
She isnt opening the exercise-book. Is she opening the exercise-book?
Jake isnt an engineer. Is Jake an engineer?
I am not closing the door. Am I closing the door?
Tom isnt a good boy. Is Tom a good boy?
This isnt my book. Is this my book?