определите наименьшее значение функции y=10cos x 
на отрезке[-pi/6;4pi/3]

I.  Переделайте предложения в Passive Voice.

1. He published the book last year.

2. We use these clothes only on special occasions.

3. Somebody switched on the light and opened the door.

4. They will give you an answer in some days.

5. Who wrote this novel?

6. They showed her the easiest way to do it.

7. We have looked for the telegram everywhere.

8. Nobody had visited him.

9. They will have finished the work by twelve.

10. We shall not admit children under sixteen.