He always keeps an eye on shortcomings of his brother’s _________ refusing to admit his own mistakes...
2022-09-22 14:01:51 207次 2018届天津市河东区高考英语二摸 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He always keeps an eye on shortcomings of his brother’s _________ refusing to admit his own mistakes.
A. but B. while
C. although D. though
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