when was your mobile phone bought(改为主动句）

when was your mobile phone bought(改为主动句） when was your mobile phone bought 改为主动语态 My bought this mobile phone half a year ago(改为同义句） 英语翻译Don't use your mobile phone on the piane.（改为同义句）______ _ What's the price of your mobile phone?(改为同义句） How much ____ 句型转换1.Why not use your mobile phone to take a photo?（改为同义句）W when did your father buy you the mobile phone 换为被动语态 when（ ） when the plane take off ,you（ ）use your mobile phone Bring the mobile phone to school tomorrow.改为否定句 Whose mobile phone is this?(改为同义句) Is that your mobile phone? I bought the story book when I was ten.(改为同义句)I______the sto