题目内容
He is rather difficult to make friends with, but the friendship of his, _____, is truer than any other.
A. once gained B. when to gain C. after gained D. while gaining
A
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题目内容
He is rather difficult to make friends with, but the friendship of his, _____, is truer than any other.
A. once gained B. when to gain C. after gained D. while gaining
A