As the immune system weakens, it loses the ability ________ illnesses. A.fighting B.fought C.to figh...
2022-11-20 17:37:20 213次 2014高考英语疯狂冲刺倒计时:单项填空(非谓语动词)完形填空阅读理解(解析版) 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容:
As the immune system weakens, it loses the ability ________ illnesses.
A.fighting B.fought
C.to fight D.to be fought
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