Theyhavebeen_________byinjury,but

发布时间：2020-07-27 16:56:33

They have been _________ by injury, but nothing could _________ their determination to continue．A.weak; weakenB.weakness; weakenedC.weakened;weakenD.weaken; weaken

网友回答

C解析前一个分句是现在完成时的被动语态，应用动词的过去分词形式weakened；后一个分句中，情态动词could之后应用动词原形。
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