known
                    - The manager ____ nothing about the matter ____ he read his secretary’s report.
 - Excuse me, when you the girl over there? —Last year in Beijing. And I her for about one year.
 - ______ you ever ________ Tom before ?—- No, I _____ him just two minutes ago.
 - _____ is known to us all that the 2012 Olympic Games will take place in London.
 - You seem to have known Dr Smith for a long time.—- That’s true. ______ he joined our club six years ago.
 - Michael Jordan, known as ____ top scorer in _____ NBA, did much charity work for society.
 - _______ is known to us, the dragon stands for China ______the bear symbolizes Russia.
 - I have known much about the concert.—_______.[ ]
 - ______ have you known the city? For five years. [ ]