Mr. Smith has bought a new house in the country, around _____ some green trees.

The meeting ___________ because of the smog in Northern China last week.— Oh, it’s too bad! We should take action to improve the air quality.

London is a big city, _____ 7 million people.[ ]

You should have a part-time job during the summer holidays. — I don’t you, Mum. I am too young to do that.

Did Mike return home late last night? —Yes, he didn’t come back until the work ________.