离开教室的时候记着关灯.
Remember to the lights when you leave the classroom.
It's (健康的)to eat more vegetables and less meat.
My dictionary is lost, could you please (借)one to me?
There will be less (污染)in 100 years.
It's very (重要的) to make a plan before we do everything.
There's a pay phone (在……的后面) the library.