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They have been by injury, but nothing could their determination to continue. [ ]

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They have been by injury, but nothing could their determination to continue. [ ]

They have been _________ by injury, but nothing could _________ their determination to continue.

[]A.

weak; weaken

B.

weakness; weakened

C.

weakened;weaken

D.

weaken; weaken

试题答案

答案: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。