Помогите с Английским языком! Пожалуйста!

Поставьте предложения в вопросительную и отрицательную формы.
4. Our
teacher asks many questions. 5. Nick worked at school
last year. 6. We shall go to St. Petersburg in summer.
7. They went to Moscow.
9. They study English. 10. My sister finished her work.