Waste can be seen everywhere in the school. Some         ask for more food than they can eat , some students don’t         to turn off the water taps after they finish washing, and others often forget to turn off the           when they leave the classroom. They say these things are cheap,        I don’t agree with them.
Waste can bring a lot of problems. Though China is rich in some resources (资源), we are         of others. It is reported that we will have no coal or oil to         in 100 years. So if we go on wasting our resources,       can we use in the future and where can we move? Think about it. I think we         say no to the students who waste things every day.       should stop wasting as soon as possible. If we do our best, waste can be stopped         and many natural resources can be saved. 
A. people  B. students C. farmers 
A. remember    B. have C. forget
A. lights  B. machines C. radio   
A. or  B. and  C. but
A. tired   B. short    C. full
A. use B. do   C. make
A. how B. where    C. what
A. can B. should   C. shouldn’t  
A. Everybody   B. Nobody   C. Somebody
A. two days   B. one day  C. some days