请把以下的句子改为被动语态,
1.FiredestroyedmuchofLondoninthe17thcentury.
2.Wehavetodosomethingtostoppopulationgrowth.
3.Theyarepullingdowntheoldtheatre.
4.Themanagerhascarefullycompil(编写)thereport.
5.Thelibrariansaidthattheywerestartinganewsystem.
6.Doessomeonecleanalltheroomsregularly.
7.Thejudgeswilljudgetheapplicantsonthebasisoftheiroriginality.
8.Youcan’twashthisdress;youmustdry-cleanit.
9.Themilkmanbringsthemilktomydoorbutthepostmanleavesthelettersinthehall.
10.YoucanfindanswerstotheexercisesintheTeacher’sBook.
11.Twostormshavehittheareainthepastthreeweeks.
12.Whenarewetoholdthesportsmeet?
改变以上句子的动词在到被动语态,再补补充一条问题
13.WeassumeBillwillannouncehiscandidacysoon.