阅读下面短文。按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。 As we all know, Beijing, Shanghai, Shenzhen, Hangzhou, and other big cities are great places to live {#blank#}1{#/blank#}. There are always something {#blank#}2{#/blank#}(interest)for people to see and do. You can go to, different kinds of museums, see all kinds of plays and concerts. You can also buy things {#blank#}3{#/blank#}all over the world,
But there {#blank#}4{#/blank#} (be)serious problems in big cities, too. For example, It's very expensive {#blank#}5{#/blank#} (live)there, and there are too many people in big cities-Every student can study at good schools and receive good medical care. {#blank#}6{#/blank#}sometimes people can't find work or good flats with proper price. Also it is hard to keep the cities {#blank#}7{#/blank#}(safety)and clean.
Some people enjoy {#blank#}8{#/blank#}(work) in big cities,{#blank#}9{#/blank#}(other) do not {#blank#}10{#/blank#}they want to move to a big city, they should think about the problems of living there first.
