问题
选择题
He is only too ready to help others,seldom,______, refusing when they turn to him for help. [ ]
A. if never
B. if ever
C. if not
D. if any
答案
答案：B
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He is only too ready to help others,seldom,______, refusing when they turn to him for help. [ ]
A. if never
B. if ever
C. if not
D. if any
答案：B