17.Old people must_____.A.be spoken to politely B.speak to p

17.Old people must_____.A.be spoken to politely B.speak to p Old people must A be spoken to politely B speak to polite C old people must____.A.be spoken to politely B.be spoken poli Old people must be spoken to politely . ELder people must_ A.be spoken to politely B.speak to polite 确认一道英语选择题Old people must_________A.be spoken to politely B.b Old people must ___politely A.speak to B.be spoken at C.be s 关于被动句.1 Old people should ________ to politely 选项A（be spoken the old man must()politely A.be spoken B.speak C.be spoken t 改错：Old people should be spoken politely.为啥要改成 spoken to old people should be spoken to politely为神马要用to? 翻译：The old should be spoken to politely .