Marry as a secretary in this pany for twenty years and now she stays at home taking care of her own garden.
A. has served
B. had served
C. has been served
D. served
网友回答
A. has served
B. had served
C. has been served
(答案→)D. served
解析：考查时态。本题特别如错选A项。现在完成时，表示的是过去发生的事情对现在的影响；而一般过去时只表示事情在过去发生，并不表示对现在有什么影响。句意：Mary在这家公司做了20年的秘书，现在她在家里照顾自己的花园。根据上下文，并没有反应出过去发生的事情对现在的影响，只是陈述过去曾经有过这样的事情。故D正确。