根据短文内容...（最好不要做错啊~）
用should,chance,problem,place,enjoy,excite,difference,live,interest,city的适当形式完成短文,每词限用一次.
New York,London,Paris and other big cities are (1)_____places to live in.There are many (2)_____things to see and to do.You can go to (3)_____kinds of museums and thesters.You can also go shopping to buy things from all over the world.
However,there are serious (4)_____in big cities,too.The cost of (5)_____is high,and there are too many people in some of big cities.Every year many people move to the (6)_____because there there are more (7)_____to find jobs,to study at good schools,and to receive good medical care.But sometimes people cannot find work or a good (8)_____to live in.Also,too many people in a small space make it hard to keep the cities safe and clean.
Some people(9)_____living in big cities.Others do not.Before people move to big cities,they(10)_____think about the problems of living there.