At the Copenhagen conference, all the countries were called on to do all they could to control greenhouse gas emissions it was too late.
kinds of animals in the world died out proved true.
I’m quite sure everything will go well .
French believe French is most beautiful language in the world.
People try to avoid public transportation delays by using their own cars, and this ____ creates further problems.
It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays.