—Have you mended your shoes Bob？—Yes I them twenty minutes ago A. have mendedB. had me

问题补充：

—Have you mended your shoes, Bob？—Yes, I them twenty minutes ago ．

A. have mended

B. had mended

C. mended

D. mend

答案：

A. have mended

B. had mended

(答案→)C. mended

D. mend

解析：句意：你修好你的鞋了吗，Bob? 是的，我20分钟前修好的。由于句中有twenty minutes ago 这一短语，表示过去的事情，所以本句应用一般过去时。故选C。