Ответ: смотри решение в развернутом виде
Краткое пояснение: Преобразуем активные предложения в пассивные, ставя объект действия на первое место и используя соответствующую форму глагола "to be" и прошедшее причастие.
- Spanish is understood by them.
- A new car was bought by my friend.
- The bathroom was cleaned by John.
- The window is closed by the teacher.
- Handball can be played by the girls.
- The cat wasn't bitten by our dog.
- The cars are repaired by the mechanic.
- The fire alarm is tested by the electricians.
- The blue jeans were invented by Levi Strauss.
- The photos are take by Frank.
Ответ: смотри решение в развернутом виде