摘要：6．Jim is awfully difficult to make friends with, but the friendship of his, ,is more true than any other． A. once gained B．when to gain C．as gained D．while gaining
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Jim is awfully difficult to make friends with, but the friendship of his, ________,is more true than any other．
- A.once gained
- B.when to gain
- C.as gained
- D.while gaining