Ben is my friend, he is popular in his class. He can{#blank#}1{#/blank#}(弹奏）the piano very well and is   ready to teach others to learn it . He likes playing basketball very much and sometimes cheers the {#blank#}2{#/blank#}(运动员) of his favorite team on weekends with other fans.

    He thinks the {#blank#}3{#/blank#}(交通）is very heavy and the air is not{#blank#}4{#/blank#}(新鲜）any more, It's very dirty. So he usually{#blank#}5{#/blank#}(骑) his bike to school, it takes him an {#blank#}6{#/blank#}(小时) . When it rains, he has to take the underground to school. He says if {#blank#}7{#/blank#}(每人）starts to do something right, the earth will be better in the{#blank#}8{#/blank#}(将来).

However, he is not {#blank#}9{#/blank#}(小心的）with his school things when he is in a hurry. He always leaves homework at home on weekdays, that makes his teacher very angry . He  {#blank#}10{#/blank#}(承诺)that he will take his homework to school next week.

    Do you know the differences between the new buildings and the old ones?

    Old buildings h {#blank#}1{#/blank#} brick and stone walls. The walls hold up the buildings. In cities, many modern buildings l {#blank#}2{#/blank#} as if they are made just of windows.

    Walls of dark glass reach high into the air. Many buildings are m {#blank#}3{#/blank#} than 50 stories tall.

    Are walls of glass strong e {#blank#}4{#/blank#} to hold up the new building? No. The new glass walls do not hold up the buildings, but they only cover up the frame made of steel. Have you ever watched a new building going up? The steel frame is built f {#blank#}5{#/blank#} . Then the glass walls are hung on the frame. When the building is f {#blank#}6{#/blank#} , the frame does not show. The outside looks like windows without walls. The glass walls s {#blank#}7{#/blank#} in the sun with no decoration. Many people find them beautiful just as they are.