1.I have persuaded him to change his mind.
2.His success is in virtue of luck.
3.As for what is a black hole,astronomers have not totally solved this problem.
4.The vedio forecasted that it is getting colder.
5.You should not take too much work on you.
6.Rock and Roll is fast paced,and I like it very much.
7.We should face difficulties rather than run around them.
8.People have different views even on the same problem.
9.All that the manager have done is based on the policy.
10.This chapter is about the transformation from heating energy to electric energy.