题干
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When Bill Gates decided to stop schooling and created Microsoft in 1975, he ______ law at Harvard University.
When Bill Gates decided to stop schooling and created Microsoft in 1975, he ______ law at Harvard University.
A：studied
B：had studied
C：was studying
D：would study
答案(点此获取答案解析）
C
的最小值是………………………………………………………………（ ）