【正确答案】 1、{{*HTML*}}We didn’t know his telephone number, other wise we would have telephoned him．    

【答案解析】[解析] 本题主要考查对虚拟语气的掌握。
[解析] We didn’t know his telephone number是客观事实。other wise表示“否则”，是对前面过去事实的否定假定，意思相当于“If we had known his telephone number”，故所译部分应使用虚拟语气。
[点睛] 注意otherwise，without，but for等引出的虚拟条件。