问一道被动语态题.A lot of things ____ by people to save the little girl now.A.are doing B.are being done C.has been done D.will be done应该选那个?还有介绍一下B选项表示什么.

1.we have written a lot of e-mail on the computer in the past few years（改为被动语态）问下have written是不是改成have been written为什么2.as years have gone by ,computers have been made smaller and smaller.(改为主动语态）3.th 问一道被动语态题.A lot of things ____ by people to save the little girl now.A.are doing B.are being done C.has been done D.will be done应该选那个?还有介绍一下B选项表示什么. A lot of people in China can speak English nom 改为被动语态 I spent a lot of money on books.（改为被动语态） Our teacher often makes us do a lot of homework.（改为被动语态） He saved a lot of money in the bank的被动语态是? The people in the city have given the policemen a lot of help.改为被动语态 we saw a lot of studengts playing football on the playground 改为被动语态 改为被动语态：Today,a lot of people use bikes to work in cities. Han Mei grows a lot of flowers in her garden .改为被动语态 The boy collects a lot of butterflies every year.改为被动语态, A lot of foreign fridnds visit the beautiful town every year.改为被动语态 He has planted a lot of trees.(改为被动语态） So far,a lot of trees_____(plant)是用被动语态? 初中英语1句 改被动语态the policemen are asking the bank robber a lot of questiona now.改被动语态the bank robber ____ ____ asked a lot of questiona now. we have kept a lot of history books in our school library.(改为被动语态)A lot of history books ____ ____ kept in our school library. We have donated a lot of money to Projevt Hope.（改为被动语态）A lot of money_____ ____ _____to Project Hope. 改成被动语态:Did Jack make you homework for him.I can't buy a lot of things for myself.