Напишите это в ПАССИВНОМ ЗАЛОГЕ , хотя бы пару предложений, просто совсем не понимаю, спасибо :)

1. She doesn't invite me to her dinner parties. 2. The teacher sent for the pupil's parents. 1. I don't think they will have done this work by the end of the week. 3. Will snow cover the fields in winter? 4. They are building a bridge over the river now. 5. Nobody slept in the bed. 6. The pupils always laugh at this boy. 2. "Has the secretary typed the letters?" "No, she is typing them now." 7. When I came home they had eaten the sweets. 10. The children were playing tennis from four till five..