Lei Feng was a person who was only too ready to help others, seldom ________, refusing them when the...
2022-08-11 04:27:01 182次 江苏省无锡市2019-2020学年高三上学期期中英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Lei Feng was a person who was only too ready to help others, seldom ________, refusing them when they turned to him.
A.if never B.if ever C.if not D.if any
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