They____【不能】speak Chinese

They____【不能】speak Chinese HO-CH2-CH=CH-CH2-COOH为什么不能水解 She can speak Englist speak为什么不能加S 能与Na反应放出氢气,但不能使PH试纸变色的是CH2=CH-COOHCH2=CH-CH2OHCH2=CH-CHOCH2=CH-COOCH3 ch初三物理为什么（2）A不能选? >CH-CH Speak speak speak speak speak speak a speak 后除了跟语种,不能直接跟宾语的,怎么会有speak a word呢? speak very good English对吗?speak 和English之间好像不能加东西哦， CH3—CH=CH2和CH2=CH—CH=CH2 为什么不能所有原子都处于同一平面 下列物质不能使溴水褪色的是AC2H4 BCH3-CH=CH-CH3 CSO2 DCH3-CH2-CH3 英语翻译They____ _____ _____ _______ where were they____(介词）? They____(write)several original songs.