don't approve--disapprove
over-dependence --over dependent
A important reason ---an important reason is that it's very unsafe
as u know---as we known
research --researching
the others new energy---the other new energy
and renewable--and they also renewable
说句心里话 你这篇作文真的很…………
建议你再修改一下吧
特别是一些表达
BY THE WAY 你是高中还是大学生?
