The confidence of the Chinese film makers _______by Avatar, the release of______ has not only set a good example for the Chinese film industry but also embarrassed our directors, who lack professional ethics. 

After the long journey, the three of them went back home, ______.

____is certain is ___prevention is more important than treatment .

On Halloween, Children in costumes ask for candies ____________ shouting “ Trick or Treat”.

This book can be of help to ________ wants to do the job.