this inventor made the invention when he was over sixty.（同义句

The scientist made the great invention when he was over seve 1、The scientist made the great invention when he was over se 解英语语法题the scientist made the the great invention when he was He is over sixty years old.的同义句 When he was over thirty,he became very famous.的同义句 When he w the scientist made the great inventiion when he was over sev He was surprised when he heard the news同义句 this is the invention called flying donuts 改为同义句 when he was seventeen?的同义句 There are over sixty desks in the room 改同义句 There are_ _ six There are over sixty desks in the room的同义句 He was very happy when he heard he passed the exam 同义句怎么改?