Read the following passage and choose the best option for each numbered blank.
Bill Gates is the co-founder of Microsoft, the world's ___(1)___ PC software company. He is ___(2)___ the richest people in the world. Bill Gates' interest in computers started ___(3)___ he was a teenager. After high school, he was accepted to several top colleges in the USA: Harvard, Yale, and Princeton. He ___(4)___to go to Harvard to study law. At Harvard, he focused more ___(5)___ his interest in computers than on coursework. He often relaxed by playing video games in Harvard's computer lab. He left Harvard before graduating ___(6)___ he wanted to open a software company with his friend Paul Allen. However, he later said, "I don't think dropping ___(7)___ is a good idea." In 2007, he received an honorary ___(8)___ from Harvard. He began his speech by saying this to his father in the audience. "I've been waiting ___(9)___ than 30 years to say this: Dad, I always told you I'd come back and get my degree." Bill Gates is no longer working full time for Microsoft. He is now, with his wife, ___(10)___ The Bill & Melinda Gates Foundation which aims to improve healthcare, reduce poverty, and promote education around the world.