As many small cities grow rapidly, water has been polluted, which is a serious problem that people should pay more attention to.
—Did you return Fred’s call? —I didn’t need to________I’ll see him tomorrow.
Some parts in South China have experienced________this year as they did last year.
Ten years ago the population of our village was________that of theirs.
Peter’s jacket looked just the same as Jack’s,but it cost________his.
According to statistics,a man is more than twice as likely to die of skin cancer________a woman.