lets clean the room now.改为否定句

lets clean the room now.改为否定句 Lets Keep the Water clean 中文意思 是clean the room 还是clean room? 改为同义句：The old man lets other people clean his room once a week.The old man _____ his room _____ once a week. clean the room 和 clean up the room 是clean the room up,还是clean up the room can you clean the room? Are they [ ] [clean] the room. He usually clean the room. Please k( ) the room clean the room wants ___(clean) the room is p_____ clean Tim lets his sister to clean his room every weekend 中哪里错了 Clean the room can you help me I often ____(clean) the room. I clean the room改为否定句 Did they clean the room?怎么回答? I need to clean the room.