问题补充:
I the poor rabbit, but I didn’t have the right drugs with me at that moment.
A. saved
B. had saved
C. could save
D. could have saved
答案:
A. saved
B. had saved
C. could save
(答案→)D. could have saved
解析:考查情态动词表推测我本可以挽救这只可怜的兔子的,但我当时没有合适的药品。could have done表示本可以做某事但实际上没做。是对过去动作的推测。