1 The door is opened by you. 2 Questions were asked by us. 3 His project will be finished by him next week. 4 This excercise can be done by him. 5 I was invited by them to their conference. 6 A new film was seen by me. 7 Letters are written by my sister regularly. 8 New methods of student's training are developed by universities. 9 A still higher degree can be got by the students after graduating from the university. 10 The curricula of technological universities must be improved by the study of foreign languages, history and economics.
