В каких странах (государствах) существовал И социализм И капитализм? (очень срочно, помогите пожалуйста, полный, развёрнутый ответ)

Передайте следующие предложения в страдательном залоге.

1. They are building a bridge over the river. 2. I haven't yet translated the article. 3. You will speak about the film at the lesson. 4. The head mistress sent for the pupil's parents. 5. Has the secretary typed the letters? 6. We turn on the light when it is dark. 7. The students finished their translation in time. 8. Helen washed the dishes. 9. Betty often took her young er brother for a walk. 10. Mother has made some coffee. 11. Have you ironed your dress yet? 12. Nina mispronounced this word. 13. They have told her the truth.14. One uses chalk for writing on the blackboard. 15. I shall finish my work about seven o'clock. 16. Somebody has opened the door. 17. The waitress brought in the coffee. 18. One ofmy friends took me to the cinema last week. 19. We shall finish this work in time. 20. They built this house in 1960.

Заранее спасибо)