Transform the sentences from active into passive
They cancelledthe flight to Rome.
Karl Lagerfeld designed these sunglasses.
My mum makes this salad with pickled cucumbers and fresh parsley.
They offered him a new job.
Somebody has cleaned the room. — Правильный ответ на вопрос найдете ниже

Ответ: Спасибо большое

Ответ: поэтому и в скобках(просто некотроые учителя просят исполнителя действия писать)

Ответ: The flight to Rome was cancelled(by them)These sunglasses were designed by K. LagerfeldThis salad is made with pickled cucumbers and fresh parsley (by my mum)A new job was offered to him (by them)The room has been cleaned ( by somebody)