第1个回答 2013-04-27
Leaving the water tap on after washing hands, lights on after leaving the classroom,waste papers and other sationaries, leave their food anywhere after a meal, 本句应在特定的语境中，会有更好的效果，望采纳！
第2个回答 2013-05-12
Leaving the water tap on after washing hands, lights on after leaving the classroom,waste papers and other sationaries, leave their food anywhere after a meal, 本句应在特定的语境中，会有更好的效果，望采纳！