More and more A{#blank#}1{#/blank#} are going to work by bike. Do you know why more people are riding bikes to work? We can answer the question in d{#blank#}2{#/blank#} ways. First, bikes don't need gasoline(汽油)，so it takes little m{#blank#}3{#/blank#} to use them. S{#blank#}4{#/blank#}  a bike doesn't need much space, so it is e{#blank#}5{#/blank#} to find a place for it. And to ride a bike is good for one's h{#blank#}6{#/blank#} .People often d{#blank#}7{#/blank#} their cars to offices or to shops in the past. But now people think riding bikes is a good way of d{#blank#}8{#/blank#} sports. That's w{#blank#}9{#/blank#} more Americans are now riding to work by bike, and they are leaving（把...留下）their o{#blank#}10{#/blank#} cars at home.