题目内容：

阅读下面短文,根据文章大意用所给单词的适当形式填空 (未提供单词的,限填一词),使文章意思完整、正确,并将答案写在答题卷上。

Biking is a popular form of exercise because it's healthy and environmentally friendly.

Many cities have made efforts to make cycling 1. (easy) and more popular. In the US,Bike to Work Day 2. (hold) on May 20th every year. The aim of the day is to encourage more people3.(ride) bikes.

Copenhagen, the capital 4. Denmark, is the world's most bike-friendly city. Duringrush hour, traffic-lights are always green for bikes. When it's snowy, people clear the snow inbicycle lanes (车道) 5.(one), and the car lanes come next.

In Amsterdam, people can rent （租）6. bike almost anywhere in the city. You can always find bike rental companies near busy 7. (area).

In China, we have bike-sharing companies. They make8. more convenient forpeople to use bikes. However, biking is not that easy in many Chinese cities. Cars often take up Bicycle lanes and9.(bike) have to ride next to cars in car lanes. It is very dangerous. Chinese government is doing10. it can to improve the situation.