填空题 We didn't know his telephone number, otherwise, we 1 (telephone) him.
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【正确答案】 1、would have telephoned    
【答案解析】[解析] 该句考查的是含蓄虚拟结构,其中虚拟语气暗含在介词“otherwise”(否则…)中,从句是对过去事实的虚拟。