Since I went on a business trip to Beijing by train last week and stay there for two days, it is really a pity for me to miss your birthday celebration.
由于上个星期我是坐火车去北京出差的﹐并且呆了两天﹐所以没能赶回来给庆祝生日。
Since I went on a business trip to Beijing by train last week and stay there for two days, it is really a pity for me to miss your birthday celebration.
由于上个星期我是坐火车去北京出差的﹐并且呆了两天﹐所以没能赶回来给庆祝生日。
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