China used to be called the" Kingdom of Bicycles" in the 1980s and the 1990s, but since then, cars have taken (have been taking) over the country. Because of traffic jams, it can be difficult to travel across major Chinese cities. Even 1. (go) a few kilometers can take up to an hour. Now, new apps that help people use bikes are being used more and more across cities. Both the young and the old are enjoying the 2. (convenient) that bike sharing provides.

Cheng Li started using bike share services about six months ago. He said now he was using a car 3. (little) and the metro (地铁） more. "After I get off the metro. I usually have to walk another kilometer or two, so I'll grab a bike share and go. It is convenient."

For many, the best part about cycling is 4. easy it is to do. However, many of 5. (it) bike share stations were not built in convenient places. Now, it is not difficult to find a bike, and to register (注册）6. a smart phone.

Meanwhile, there is now a lot of competition among bike-share providers because of their popularity. Some providers are trying to flood the streets with bikes to be more visible. Sometimes there are so many bikes that they completely block (阻碍） the sidewalks. This 7. (become) a problem for city government. It is common for bike users 8. (leave) bikes in the middle of the street or on the sidewalk. This blocks cars and people in already 9. (crowd) cities.

A woman 10. (interview) by the media sad," Bike sharing is really convenient, but we need taking care of the problem of illegally parked bikes."