日期：
来源：雅诚德英语网
When you were singing in the class, I entered and immediately you stopped singing because
当你在班上唱歌，我一进来你就马上不唱了，是因为
When you were singing in the class, I entered and immediately you stopped singing because
当你在班上唱歌，我一进来你就马上不唱了，是因为