Перепишите предложения в страдательном залоге:

Example:
A gang of workmen built the house in 1840. - The house was built in 1840.

1. The secretary will mail these letters tomorrow.
2. Someone ought to wash those dishes right away.
3. The factory produced 5000 cars every day.
4. People drink a great deal of tea in England.
5. Craftsmen make many beautiful objects of paper in Japan.
6. They used to sell medicine here.
7. You must return these books within two weeks.
8. The police arrested him for speeding.
9. Someone had locked the door.

Я думаю, 2 предложение будет выглядеть так: Dishes ought to wash right away. Но, тоже не уверена на 100%. 7 предложение, мне кажется - These books are must be returned within two weeks. 9 предложение - возможно, The doors had been locked.

1)These letters will be mailed tomorrow by the secretary2)Those dishes are ought to washed right by someone.не уверен в ответе3)5000 cars are produced every day by the factory.4)A great deal of tea are drunk in England by people.5)Many beautiful objects of paper are made in Japan by craftsmen.6)Medicine were used to sell here by them.не уверен в ответе7)These books was must returned within two weeks by yours.не совсем уверен8)He was arrested for speeding by the police.9)--- по-моему, это предложение нельзя перевести в страд залог