— The air pollution is terrible.— It will be worse ________ we take action to protect the environment.
Most students have to go to school on weekdays. A. Saturday and Sunday B. from Monday to Friday C.from Monday to Sunday
It’s very difficult to learn English well , but you can’t___.
—Lisa has made great progress these days. --_____ , and ______.
It’s too late. All of us are very_____.
He got the first prize in the match and we are all____him.