the room must be clean还是must be cleaned

the room must be clean还是must be cleaned The room must be aired your room must be kept_____ every day.有every day 用clean 还是cl the football must be()in the room there must be someone in the room _(be)there We must clean the room（对clean the room） Our room must ___ clean.A.keep B.be kept C.to be D.kept it must be in the living room.( 改为反问疑问句 )it must be in the l The light in the room must be turned off They must be in the reading-room,_______ _______[ daniel's bag must be in the room , ? the room must be kept wet.变成被动语态!