---How long have you retired Grandpa?-Well four years. But you know I for Courtaulds

问题补充：

---How long have you retired ,Grandpa?

---Well, four years. But you know, I for Courtaulds for over forty years.

A. have worked

B. worked

C. had worked

D. work

答案：

A. have worked

(答案→)B. worked

C. had worked

D. work

解析：时态题。根据句意可知爷爷现在退休四年了现在不再工作所以用一般过去时描述过去的动作。“爷爷你退休多长时间了？”“四年了。你知道我在Courtaulds工作了四十多年。”