We must do ____ the party ____ us.A.as; tell B.as; tellsC.what; tell D.what; tells但我看很多人都说选D.到底应该是哪个对呢?为什么

Do we ____ (must,have to) be quiet in the shool library? We must find sb___(do) the job. What rules ____ we ____ (must obey)in the classroom We must do our ____ to help them 填什么 We must do everything possible to keep them ____(safety) 填空,we must do aye ____ {exercise} every day Must we cut down the trees? No.we ____. We must do ( )the people want us to do. pay attention to等于什么we should pay attention to the state of environment and we must do all we can to reduce the pollutionwe should___ ____ ____ the state of environment and we must do all we can to reduce the pollution We must find somebody e_______to do the job We must do more exercise often to p__ the disease we must do house___ and keep the windows____ We must find a person ___ (do) the work. 改为被动语态：We must do the work right now We must speak to the old men politely.(改为同义句） the old men must ____ ____ ____ politelyWe must speak to the old men politely.(改为同义句）the old men must ____ ____ ____ politely We must keep ____(health) we must ____ friendly____ visitors We must ____(switch on/switch off)the lights before we leave the classroom.