You can use a mobile app to help you choose the best route to cycle in ______.

Nam: Do you think our city will be recognized as a smart city this year? Minh: ____. There are still many challenges such as air pollution and heavy traffic.

You can unlock your bike from one station and return it to any other station in ________.

You can have a medical check-up online in ________.

You can use your bank card to pay for travelling on the bus or underground in ______.

Peter: Do you think the smart traffic lights can help prevent traffic jams? Mai: _____. Traffic lights will gather real-time information from smart sensors and regularly update light timing.