—I don’t know what I without the suitcase you lent me.—Glad to have been of some help to

问题补充：

—I don’t know what I without the suitcase you lent me.

—Glad to have been of some help to you.

A. would have done

B. would do

C. should have done

D. should do

答案：

(答案→)A. would have done

B. would do

C. should have done

D. should do

解析：

试题分析:考查虚拟语气。从句中you lent me和答语中的to have been 可知事情是发生在过去，所以主句是对过去的虚拟，应该用 would have done，所以A 选项正确。句意：--要是没有你借给我的手提箱，我真不知道该怎样做。--很高兴能够对你有所帮助。