过敏性哮喘咳嗽:You’d better not talk in the reading room,please. _____ _____in the reading room,please.

是you 'd better not do 还是you 'd better not to do You'd better 请问"你最好不做某事”是You'd better not do 还是You'd better not to do , You’d better not talk in the reading room,please. _____ _____in the reading room,please. 关于 You'd better YOU’D BETTER DO IT NOW you'd better to do / you'd better do 有什么区别哇？ you'd better have the colour TV set------- you'd better watch yourself. 的意思 填词You'd better ______(拜访)him