题目内容
He is always ready to help others, seldom, ________, refusing them when they turn to him.
[ ]
A.
if never
B.
if ever
C.
if not
D.
if any
答案:B
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题目内容
He is always ready to help others, seldom, ________, refusing them when they turn to him.
if never
if ever
if not
if any