you had better to keep the classroom ______(clean).句子好像是这样的~

you had better not to do something 对还是you had better to not do something you had better not to spend...you had better not to spend too much time...you had better not spend too much time 以上两个句子哪个正确had better not do sth还是had better not to do sth you had better make you had better can you help me[to]learn English?canyou help me----- ------ ------ had better do,had better not You had better start to do it right now.翻译. You had better to read English every morning.改错 You had better ____every day to keep healthy. You had better to read English every morning.改错 You had better ____every day to keep healthy. 改错：You had better not to open the door. you had better leave it to a professional的意思 You ___ your key to your mother before you leave .You _________ your key to your mother before you leave .A.had better to give B.had to give better C.had better give D.had better given You had better to see the doctor You had better see the doctor 那个对?求详解 You _____ your seats today if you want to go to watch the final matchhad better to reserve B:had better reserve C:had to better reserve D:had to reserve better You had better+动词原形 You had better go to see a doctor right now为什么是had不是have? If you want to let me listen to you ,Had better be take out your skills