问题描述: 我晚上10:00前必须上床睡觉.I have to﹙﹚ in bed﹙﹚o'clock in the evening. 1个回答 分类:英语 2014-10-03 问题解答: 我来补答 e before (你可能少打了个数字10)I have to﹙be﹚ in bed﹙before﹚10 o'clock in the evening. 展开全文阅读