1.把....扔进.….._throw...into...
2．有机会做某事--have a chance to do sth
3．清理--clean up
4. make the world a better place--让世界变得更美好
5. work together-合作
6. be filled with--充满

1.如果你砍伐树木，你会受到惩罚。You will be punished if you  cut dowa tree.
2．这次展览什么时候举行?When _ is __ the show_going to be held?
3.污染是当今世界上最大的问题之一。Pollution is one of the biggest problems _ in the world today.
4.如果我们合作，我们能使世界变成一个更美好的地方。If we _work together ,we can make the world a better place