问题补充：
When I graduated from high school , my family had a business I never thought about getting a college education.
A. so
B. or
C. though
D. since
答案：
(答案→)A. so
B. or
C. though
D. since
解析：A. so 所以B. or或者C. though 尽管 D. since自从，尽管；根据句意：当我从高中毕业时，我家就有了一项生意，所以我从来没有想过要去读大学。结合句意，应该选A.
