①All of us are students from English.(改为否定句( none )( of )( us )( is )a student from English②I was a middle school student last year.(改为同义句) I ( wasn't )a middle school student ( before )last year.③The light takes many years to reach the earth.(对many years提问）
( how long does )the light ( take )to reach the earth?④They had a wonderful time in the science museum(改为同义句) They( enjoyed )( themselves )in the science museum.