Напишите последующие предложения в пассивном залог.Эталон: John wrote a poem. -

Напишите последующие предложения в пассивном залог.
Образец: John wrote a poem. - A poem was written by John.
1) The students will learn English and Chinese.
2) My colleagues often attend international conferences.
3) They have already sold their house.
4) Architect Kryachkov built a lot of wonderful houses in Novosibirsk