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【B3】A.IfB.AsC.ThoughD.Unless
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【C2】A.RegardlessB.BeneathC.DespiteD.Since
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【C6】A.ifB.untilC.whenD.though
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【C6】A.even ifB.untilC.ifD.when
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He was warned______he should make the same mistake again.A.ifB.givenC.lestD.unless
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【C2】A.thereforeB.ifC.despiteD.although
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Women workers wear hats ______ their hair gets caught in the machine.A.ifB.in caseC.unless