1．Many people are worried about the justice(公正) of the case, in which the poor man was sentenced to 4 years in prison.
2．The boy’s honesty(诚实) is what makes him different from the other children.
3．The inventor won the first prize because of the wonderful machine he invented(发明)．
4．The three spacemen made great contributions(贡献) to the development of the space program.
5．After a long period of argument(争论)，we finally reached an agreement about the problem.
6．Though used for more than 5 years, my car is still in good condition(状况)．
7．Today we have the freedom(自由)to decide our own future.
8．It is known that fuels(燃料) like coal and oil cause a lot of pollution.
