To find out _______ young people think about the future of urban life, a teacher in the US. asked his students to think ______ they would run a city of 50,000 people in 2025.

econd World War, _________ the earlier one in 1914, promoted public concern about the physical and intellectual well-being of the country’s human resources.

Would you like to be an actor? —I don’t like acting very much. I__________ to be a director.

We have celebrated this festival for many years and it ________ Tang Dynasty.

I would never recommend________underground there.[ ]