来源：百度文库 编辑：高考问答 时间：2021/04/15 06:07:40
To take a deep breath can helps you to relieve tension.
i don't think this project should be undertaken in such a haste.
many experts believe that in 2020 India will have a greater population than china.
what would happen to the enviroment if trees were cut down by people at will?
we should praise the young pioneer who has carried that frightned baby to safety.
it's essential to our success that we make a correct plan in time.