You'd better--------(keep)off your mobile phone during the concert.用所给词的适当形式填空.

英语翻译you'd better ( ) ( ) ( ). You'd better know You'd better know it 英语翻译You'd better not. 是you'd better not you'd better know your you’d better not come you'd better 等于什么? You'd better( )it today you’d better __________________________________ (下定决心). You'd better( )it today? I think you'd better you'd better.=you had better吗?为什么? You'd better go there for____(you). you'd batter也能说成you better吗? You'd better中的'd是什么意思? You'd better中的'd是什么意思? you'd better是you would better还是you had better的缩写?两者什么区别? you'd better 是什么的简写?