1.China is one of the greatest countries with the longest (long)history.
2.English is widly (wide)used in the world.
3.My pen friend lives in the southern(south)part of China.
4.we are(be)good friends for a long time.
5.I want to know if rice can be grown(grow)in Guangzhou twice a week.
6.The USA attack(attack)Irap in March,2003.
7.Listen!The radio says a serious accident happened(happen)last night.
8.There are over 5000 living(live)languages in the world.
9.Something must be done (do)to build a Great Wall successfully(success).
10.The used(use)truck I bought from Don is far cheaper than a new one ,but it is very useful(use).