In the eighteenth century, cities became larger and larger. People moved from the countryside and small towns to the 1 because there was more work for them to do in the cities.
On Sundays and holidays, they liked to leave the cities and have a good time in the countryside. But not every 2 had a horse or a wagon（四轮马车）. People needed a simpler means of transportation.Inventors in many countries tried to solve this problem.
The first bicycle, which was very simple, 3 in 1790. People called "the horse on wheel". Then in 1861, after many improvements being made, the bicycle became a practical 4 of transportation.
People liked bikes because they weren.t as expensive as horses and didn.t need to be fed. They could go anywhere and were easy to 5 .

1. A：appeared B：cities C：family D：means E：ride
2.A：appeared B：cities C：family D：means E：ride
3.A：appeared B：cities C：family D：means E：ride
4.A：appeared B：cities C：family D：means E：ride
5. A：appeared B：cities C：family D：means E：ride