I ______ the poor rabbit, but I didn’t have the right drugs with me at that moment.
A．savedB．had savedC．could saveD．could have saved
D
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(dāng)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。
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