①Is the City Hall in the {#blank#}1{#/blank#} (center) part of the city?

②We're having a {#blank#}2{#/blank#} (color) life at school today.

③Scientists have spent hundreds of years {#blank#}3{#/blank#} (study) the weather changes.

④ {#blank#}4{#/blank#} (not drive) too fast! It's dangerous!

⑤ Linda made a {#blank#}5{#/blank#} (decide) to take part in the game show.

    It was reported about ten years ago that mobile phones would be the cigarettes of the {#blank#}1{#/blank#} (twenty-one) century. That is TURE! It  {#blank#}2{#/blank#} (seem) that the use of mobile phones for some people is almost as addictive  {#blank#}3{#/blank#}  cigarettes. Many users keep them {#blank#}4{#/blank#} (work)for hours a day. Many people use them not only  {#blank#}5{#/blank#} (talk) with people, send and receive messages, but also play games, take photos of even get on the Internet to read news. They say they can't live {#blank#}6{#/blank#} them. But this is not a little thing. In fact too much use of mobile phones may cause  {#blank#}7{#/blank#} (ill), and many people have got headache by  {#blank#}8{#/blank#} (use)mobile phones too much. Now in other  {#blank#}9{#/blank#} (country), mobile phones carry a health warning on the back just like  {#blank#}10{#/blank#}  cigarettes packets do.