完成句子 She is rather difficult to make friends with, but her friendship, is more t
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完成句子
She is rather difficult to make friends with, but her friendship, ________(一旦获得)is more true than any other．(gain)
试题答案
答案：
解析：答案：once(it is)gained
解析：考查状语从句。gain与her friendship之间是被动关系，故用过去分词；本句中主、从句主语都是her friendship，因此可以省略it is。