About one year ago, people ____ for a taxi by the road in China. But now Dididache is one of the most popular taxi-hailing apps(应用软件). Many young people think it is a good way ____ money and time. According to a report the taxi-hailing app ____ by more than 40 million people so far. But for the old it’s getting harder to take taxis. The government should____ out solutions. Dididache Company says that it ____  more convenience for people to get around in future.