Clearly, in a system _________ every decision is made on the basis of tradition alone, it may be difficult to achieve progress.

I shall never forget those years _______ I lived on the farm with the farmers, _______ has a great effect on my life.

income worry is _______ rather common problem of the aged, loneliness is another problem that _______ aged parents may face.

17Puppy love is _________

In 2002, the Chinese government ______ a law stating whoever deserts girl babies would be punished by law.