1. 改错题（找出错误并改正）

1. （1） He was busy writing a letter rather read a newspaper.
3. （2） The house is surrounding by high walls.
5. （3） She has a gift at learning languages.
7. （4） Let's go the downtown, said Liu Qian.
9. （5） There was frost on the ground , confirmed that fall had arrived in Canada.
11. （6） Canada's population is only slight over thirty million.
13. （7） We are going to see some great sceneries during our journey.
15. （8） After two days travel ,the girls began to realize that Canada is quite empty.
17. （9） Canada has more fresh water than any other countries in the world.
19. （10） A metre is measure of length.