Question

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

 

Answer 1

【答案】

D

【解析】考查情態(tài)動詞表推測  我本可以挽救這只可憐的兔子的，但我當時沒有合適的藥品。could have done表示本可以做某事但實際上沒做。是對過去動作的推測。