When it ________ education, the majority of people believe that education is a lifetime study.

There is a new problem _____ in the popularity of private cars _____ road conditions need to be improved.

—The thread of my kite broke and it flew away.—I told you it would easily break _____ was the weakest.

Is it true ______ the rain stops , it will be as hot as in the summer here?

Due to Tom’s joke, the discussion __________and went on in a friendly atmosphere(气氛).

In the_______of proof , the police could not take action against the man.

—May I use your phone?—________.

He____me that he decided to leave on Monday.

Scientists in the world are expected to find a(n) _____ to the problem of over population.

I _______ the rush-hour traffic so much that I often avoid it by coming late to work.