what was he doing when the crime happened改为同义句

what was he doing when the crime happened改为同义句 【英语帝】What was he doing when the crime happened 改同义句 What were you doing when the robbery happened?(改为同义句） What w The man was at another place when the crime happened同义句 I was at another palce when the crime took place（同义句） He began to learn the piano when he was?(改为同义句) He started to learn the piano when he was seven改为同义句 He was very sad when he heard the news.(改为同义句) 1.HE COULD RIDE THE BIKE TO SCHOOL WHEN HE WAS TEN.(改为同义句） When he was five ,he started playing the piano .(改为同义句) he could ride the bike to school when he was ten 改为同义句 he began teaching when he was 17.改为同义句