公交是中国人出行的主要交通工具。 Buses ____1____ be the main ___2____ of transportation for Chinese people. 近年来,由于私家车数量不断增多,城市的交通问题越来越严重。 In recent years, traffic problems in cities are getting worse because of the ____3_____ of private cars. 许多城市为了鼓助更多人乘坐公交车出行,一直在努力改善公交车的服务质量。 To encourage more people to take buses, many cities have been ___4___ to improve the quality of bus services. 车辆的设施不断更断,车速也有了显著提高。 Bus ___5___ are being constantly ____6____ and the speed has also increased significantly. 然而,公交车的票价却依然相当低廉。现在,在大多数城市,许多当地老年市民都可以免费乘坐公交车。 However, bus ____7____ remain rather low. Now, in most cities, many local _____8_____ are eligible for free bus rides.