Here are the sentences transformed from active to passive voice for the specified tenses:
Present Simple:
- A lot of foreigners are being subbed by them.
Past Simple:
- The letters were thrown away by someone by mistake.
(Not clear; seems incomplete):
- [Assuming the sentence is meant to be: "They directed Deankin in 'Kentawoes in Woie'."]
- Deankin was directed by them in 'Kentawoes in Woie'.
Future Simple:
- You will be picked up at the airport by them.
(Not clear; seems incomplete):
- [Assuming the sentence is meant to be: "They will change the date of the master."]
- The date of the master will be changed by them.
Future Simple:
- Will her new book be published by them next month?
Present Perfect Simple:
- He has just been arrested by the police on the suspicion of murder.
Present Perfect Simple:
- The house hasn’t been cleaned by them for weeks.
Present Simple:
- A lot of books on information technology are published by them.
Present Perfect Simple:
- Several new stadiums have been built in Poland by them.
Present Simple:
- Their sculptures are usually made of wood by them.
Present Perfect Simple:
- Have the walls been painted by him yet?
Past Simple:
- How were the temples of Humankind discovered by them?
Present Simple:
- Is English spoken here by them?
Present Perfect Simple:
- Oh no, our flight has been cancelled by them!
Present Simple:
- People are inspired to travel by films.
Future Simple:
- The Hobbit won't be released this year by them.
Past Simple:
- Where was the diamond ring found by them?
Present Simple:
- This word isn't used very often nowadays by people.
Present Simple:
- I am not expected to help with the cooking by them.
Future Simple:
- A high level of commitment will be expected from all the members of the team by them.
Future Simple:
- You will be examined by a top consultant.
Present Simple:
- Important subjects are discussed by them every lunchtime.
Past Simple:
- The electricity was cut off by the company because the bills hadn’t been paid by Mr. Dixon.
Present Perfect Simple:
- No schools have been built by the local government yet.
Past Simple:
- When was your bike stolen by them?
Feel free to ask for further clarifications or additional sentences if needed!