have you mended your shoes,bob?yes,i ____them 20 minutes ago.选什么,a.have mended b,mend c,had mended d,mended

have you mended your shoes,bob?yes,i ____them 20 minutes ago.选什么,
a.have mended b,mend c,had mended d,mended

D
ago是一般过去时的标识.
句意：鲍,你修好你的鞋了吗?
是的,我20分钟前就修好了.
多谢!

a

d