составьте предложения в present indefinite passive,пожалуйста!

The office is cleaned every morning. — Офис убирают каждое утро.
Thousands of dollars are spent on coffee in America every day. — Тысячи долларов тратятся на кофе в Америке каждый день.
She is supposed to be in New Orleans. – Предполагают, что она сейчас в Новом Орлеане.
The pupil is punished for beating his classmate during the lesson. – Ученика наказали за драку с одноклассником на уроке
Dinner is cooked by my mother. – Обед готовит моя мама.
The bread is cut with a knife. – Хлеб режут ножом.
My plans are always interfered with. - В мои планы часто вмешиваются.
The doctor is sent for. - За доктором уже послали.
The wave of crime is put an end to. – Волне преступлений положен конец.
The stadium is not closed in winter. - Стадион не закрыт зимой.
Why are all the pencils broken? - Почему все карандаши сломаны?
Is flu treated with antibiotics? - Грипп лечат антибиотиками?
These doors are never kept open. - Эти двери никогда не держат открытыми.

1 The uiversity's computrs are repaired by Computer Center .
2My computer is repaired by my uncle.
3 The letters are sent every day.
4 The mail is delivered by him.
5The letters are written by me.
6The environment is damaged by the people.
7Our class is taught by Mr Smith.