——He        on the phone．

    China has once again showed its ability to change the world with its “new four great ____(invent)”—high-speed rail, electronic payment, shared bicycle, and online shopping

    China's new-generation high-speed train, the Fuxing, is now one of the ____(fast) trains in the world, which can travel at a speed of 350 km/h. Besides high-speed rail, China ____(improve) people's lives in many other innovative (创新的) ways over the last decade.

    Bike sharing, for example, is not new itself. But China has made ____much more convenient and popular both in China ____overseas. Leading Chinese bike-sharing companies Mobike and Ofo are now operating in foreign countries such as Singapore and Britain.

    And back in China, when riding a shared bike, you can stop ____ (buy) and eat whatever you want ____(simple) with a tap of your phone. You could easily pay with your smartphone by ____(scan) the seller's QR code. Cashless payment has grown into a____(choose)for Chinese  people—even a pancake seller is using Alipay.

    Besides, the four innovative ways of life are most appealing ____youths from 20 countries participating in the Belt and Road innovation, and they wish their countries would emulate(仿效) China in terms of technological achievement