1、To keep our environment clean and tidy is our duty.(改为同意句)
(It )(is )our duty to keep our environment clean and tidy.
2、When Lucy came to school,she took nothing with her.(改为同义句)
Lucy came to school(without )(taking )anything.
1、To keep our environment clean and tidy is our duty.(改为同意句)
(It )(is )our duty to keep our environment clean and tidy.
2、When Lucy came to school,she took nothing with her.(改为同义句)
Lucy came to school(without )(taking )anything.