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        1. You’ll fail your next English exam _______ you work harder from now on.
          A.ifB.whether
          C.untilD.unless
          D

          試題分析:句意:你下次英語考試會考砸的,除非你從現(xiàn)在開始更努力地工作。if如果,whether是否,until直到,unless除非。因此,選D。
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