Заданиае — переписать предложения в отрицательном залоге

Заданиае — переписать предложения в отрицательном залоге. Пример: A gang of workmen build the house in1840. the house was build in 1840. Правильно ли я сделала? 1. The secretary will mail these letters tomorrow. Мой вариант: The letters will be mailed tomorrow. 2. Someone ougth to wash those dishes right away. Мой вариант: Those dishes ought to be washed. (навенро модальный глагол вообще нельзя использовать в пассивном залоге?) 3. The factory produced 5000 cars every day. Мой вапиант: 5000 cars are produced every day. 4. People drink a great deal of tea in England. Мой вапиант: тут не знаю даже как 5. Craftsmen make many beautiful objects of paper in japan. Мой вапиант: Beautiful objects of paper are made in Japan. 6. you must return these books within two weeks. Мой вапиант: These books must be returned in two weeks. 7. The police arrested him for speeding. Мой вапиант: He was arrested for speeding. 8. Someone had locked the door. Мой вапиант: The door was locked.