My grandparents wrote letters to keep in touch with others_________ they were young. A. when B. sinc...
2022-10-19 15:49:49 210次 辽宁省沈阳市2018年中考英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
My grandparents wrote letters to keep in touch with others_________ they were young.
A. when B. since C. after D. before
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