Помогите решить 136 даю 20 балов

2) The window was broken by them a week before
3) The room is cleaning by someone every day
4) My work would be finished by me by six o’clock
5) Some good advices were given me by father
6) Many museums are visiting by us every year
7) I am often asking by teacher at the lessons
8) The newspapers has bought by postman 5 mins ago
9) The meat salad would be made by her in some minutes
10) This letter was written by my cousin years before.