Помогите переделать предложения из действительного в страдательный залог.
1 You open the door. 2 We asked questions. 3 He will finish his project next week. 4 He can do this exercise. 5 They invited me to their conference. 6 I saw a new film. 7 My sister writes letters regularly. 8 Universities develop new methods of students training. 9 After graduating from the university the students may get a still higher degree. 10 The study of foreign languages, history and economics must improve the curricula of technological universities.