Do you know the population of the USA ?A. how much…is B. what…is C. how many…are
Where ____ the 2010 World Expo _____?
The little boy in the photo is me. This photo _____ ten years ago.
Millions of trees _____ around our city every year.
She often _______ sweet music with me.
I feel Australian are similar _______ us in many ways.