Keep the room clean 与 keep the room cleaned 哪一个是正确的,为什么?

We should keep the nice room clean Keep the room clean 与 keep the room cleaned 哪一个是正确的,为什么? The boy failed ___ (keep) his room clean and tidy. I tried to keep the room being clean对? _______ you keep the room clean you may use it you'd better ___(keep) the room nice and clean. The old woman always ________(keep) her room clean I think it's important to keep the room clean.I think ____ ____ to keep the room clean. keep the door open ,keep the room clean.这在语法中是什么形式啊, we must keep the room clean.clean为什么不加ing 是clean the room 还是clean room? 为什么是keep your room clean而不是keep the room cleaned?cleaned不是也有形容词的词性? I think it is important to keep the room clean改为简单句为I think it important to keep the room clean为什么这么改.说出原因, Shall we ____(keep) our room clean? We must keep the air in the room clean.(改为被动语态）The air in the room must ＿＿ ＿＿ clean. keep the room t( ) or you will have to clean it. 把We must keep the room clean.变成另一种语态的句子 please keep the room clean.and don't t_______the waste paper everywhere