阅读下面短文,掌握其大意,并根据所给字母的提示,写出一个英语单词的完整、正确形式,使短文通顺。
More and more A____ are going to work by bike. Do you know why more people are riding bikes to work? We can answer the question in d____ ways. First, bikes don't need gasoline(汽油),so it takes little m____ to use them. S____ a bike doesn't need much space, so it is e____ to find a place for it. And to ride a bike is good for one's h____ .People often d____ their cars to offices or to shops in the past. But now people think riding bikes is a good way of d____ sports. That's w____ more Americans are now riding to work by bike, and they are leaving(把...留下)their o____ cars at home.