Please insert an appropriate article in each blank, you can fill in "a". "an", and "the" in the following blanks, and you can use "/" to stand for ZERO article.When your personal wealth is greater than (1)__________ gross domestic product of a small European country, finding (2)__________ incentive(动机)to get out of (3)__________ bed on (4)__________ chilly Monday morning in Seattle is never going to be easy. So it's perhaps no great surprise that Bill Gates, (5)__________ world's richest man, has decided to walk away from his day-to-day involvement with Microsoft, and use his full attention to oversee how (6) __________ Bill and Melinda Gates Foundation spends it $16 billion on philanthropy(慈善).Ever since (7)__________ industrial revolution, wealthy self-made businessmen and women have felt (8)__________ calling to create (9)__________ legacy(遗产;遗赠)that goes beyond (10)__________ profit and loss sheet. The saying "He, who dies rich, dies disgraced" runs deeply through (11) __________ business community.Out of all (12)__________ great philanthropists, the career path of Bill Gates appears to be (13)__________closest to that of (14)__________ oil millionaire John Rockefeller, (15)__________ founder of Standard Oil--(16)__________ company that eventually evolved into (17)__________ ExxonMobil. Both were self-made men and both became (18)__________ richest men on (19)__________ planet. Rockefeller was in his late fifties when he turned his attention full time to philanthropy. Noe Gates follows suit in his early fifties. "It was (20)__________ hard decision for me,: he said recently. :I'm very lucky to have two passions that I feel are so important and challenging.""With great wealth comes great responsibility." He adds.