T-9-Q24

rainbowmanutd

For many people, household labor remains demanding even if able toafford household appliances their grandparents would find a miracle.

A.    evenif able to afford household appliances their grandparents would find a miracle

B.     despitebeing able to afford household appliances their grandparents would find amiracle

C.    evenif they can afford household appliances their grandparents would have foundmiraculous

D.    althoughthey could afford household appliances their grandparents would find miraculous

     E.  evenif they are able to afford household appliances which would have been a miracleto their grandparents

答案C,
请教几个问题
1.would have done 和 would do 有什么区别？
2.would have done 和 could have done是同样的用法？都是本该做，但是没做的意思吗？