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【题目】We did not know you were in trouble at that time, ______we would have given you a hand.

A. otherwise B. however

C. therefore D. though

【答案】A

【解析】考查连词,根据句意,我们不知道那是你有麻烦,我们会帮助你,会帮助即实际上没有帮助,用的是虚拟语气,故前后为转折关系,故排除CD。However用于句中时前后通常都用逗号隔开,otherwise用于句中其前常为逗号,其后直接跟句子内容,故选A。

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