Помогите пожалуйсто 10 предложений с глаголом to be

1. I think my mother is the most beautiful woman in the world2. Mike is my good friend3. He was the first to finish this exercise4. I am fond of dancing5. You are a very interesting person6. Mary is a very smart girl7. They are best friends8. Maria Nikolaevna is my favourite teacher9. They were at their offcie yesterday10. You are always welcome