Mr. Black asks the kids ________ in the river, because it’s too dangerous.

more than 1300 hotels in Europe, Africa, Middle East region have committedto _________ in the event, with many more ________ to join the effort

The Greens _____ China for seven years.

What is the terrible noise —-The neighbours________their kitchen.

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.