问题描述:
( )I failed in English a third time,I had no doubt about my gift for foreign languages.
A.By the time B.Until C.After D.Unless
正确答案是B,为什么不是D,unless=if not
A.By the time B.Until C.After D.Unless
正确答案是B,为什么不是D,unless=if not
问题解答:
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