Ex2
1, Paper was the main writing material today which was invented by Chinese many years ago.
2, We had better not throw rubbish in the streets.
3, Americans use a lot of slangs, so it is difficult for me to understand.
4, Thanks to the progress in science and technology, human life has been better and better.
5, Some people still believe that the world’s resources can never be used up.
6, Jack London’s writing were so successful that he became rich and famous in his twenties.
7, My brother wishes he could speak English as fluently as native speakers.
8, Would you mind if I used the dictionary?
9, I am really impressed with the way you deal with the problem.
10, Mount Rushmall is big enough to be seen from more than 100 km away.
