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    精英家教网 > 高中英语 > 题目详情
    We didn’t know you were in trouble at that time, _______ we would have given you a hand.
    A．thereforeB．unlessC．otherwiseD．so
    C

    试题分析：句意，我们不知道你在那个时候有困难，不然我们就会帮助你。therefore 因此 unless 除非 otherwise 否则 so 因此，根据题目意思，故选 C，
    点评：解答此类题型首先要确定上下文关系,根据前后文关系确定适当连词，一定要把题干看完整，不可断章取义。
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