—Ias a cashier for 10 straight years, but I never had a sense of achievement.—Is that why

—I as a cashier for 10 straight years, but I never had a sense of achievement.
—Is that why you set up your own business?
A. worked
B. have been working
C. would work
D. have worked

(答案→)A. workedB. have been workingC. would workD. have worked解析：考查时态。根据答语可知，work as a cashier发生在过去，用一般过去时态。注意：不能受思维定势—现在完成时与时间段连用的影响。

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