21. The International Red Cross is_______ non-profit organization that cares for the wounded, sick and homeless in wartime, and victims of _______ natural disasters.
Don’t try to cheat the taxman(税务人员); you’ll never ______it.
—Would you like some more chicken? —No,thanks. I am ________a diet and I’m trying to ________weight.
He sat at the desk, __________ a novel.
Great changes _______ in China in the past 20 years.
The world today _____ different without the amazing discoveries produced by great scientists.