. We have every reason to believe that ______ 2010 World Expo in Shanghai will be ______ success.
.Among all the problems,_______is so difficult as this one.
It was 1920 ______ regular radio broadcasts began.
_____ is reported in the newspaper that talks between the two countries are making progress.
Have you any knives? I need a sharp ________.
Lucy has a great sense of humour and always keeps her colleagueswith her stories.