英语改写句子,在线等,SOS!@@@@@@@

英语改写句子,在线等,SOS!@@@@@@@
1、In the past ,there were no light rails.（保持句意）
In the past,there( )( )light rails
2、They flew their kite happily yesterday.(画线提问 happily画线）
（ ）（ ）they( )their kite yesterday?
3、Careless people may cause hill fires(画线提问,CARELESS画线）
（ ） （ ）（ ）people may cause hill fires?
4、You mustn't pack your school bags before leaving the classroom.(保持句意）
You mustn'tpack your school bags before ( )( )the classroom.
5、He went to bed after he had finished his homework.(同义句）
He( )go to bed( )he had finished his homework.