Great changes __ in the city in the past 20 years, and a lot of factories ____.
—______ are the pants? —Oh, the black pants? They are only ten dollars.
I don’t think he tried his best to learn English, ___________?
He spends as much time as he can ___________English every day.
Excuse me, is there ___________in today’s newspaper ?
Lucy knew nothing about it ___________her sister told her.