问题补充:
She cared more about her students than her own health. That’s why two years passed she was treated for breast cancer.
A. since
B. before
C. after
D. until
答案:
A. since
(答案→)B. before
C. after
D. until
解析:句意:她关心学生多于自己的健康,这就是为什么两年过去了她才治疗她的乳腺癌。因为在治疗乳腺癌之前过去的两年,所以用before,可以翻译成“才/就”,since“自从”,after“在…后面”,until直到,所以选B。