He is a financial manager in Wall Street now but nobody knows he part-time jobs here and

问题补充：

He is a financial manager in Wall Street now, but nobody knows he part-time jobs here and there for survival for eight years.

A. does

B. did

C. had done

D. has done

答案：

A. does

(答案→)B. did

C. had done

D. has done

解析：考查时态：句意：他是华尔街的财政经理，但是没有人知道他有8年的时间为了生存到处打工。因为现在是华尔街的财政经理，8年的打工是在过去发生的，用一般过去时，选B。