Experts believe ______ people can waste less food by shopping only when it is necessary.
Some people said _____ that Copenhagen Conference 2009 didn’t reach any official agreement.
. Only when you ______ what you have learned to practice ______ say you have made it.
. We have every reason to believe that ______ 2010 World Expo in Shanghai will be ______ success.
Running in the morning fresh air _________our health and we _________it.
. His honesty is beyond question.In other words,it is____ that he has stolen the laptop computer.