Our Chinese teacher often tells us a story at the ______ of his class.(begin)

题目

Our Chinese teacher often tells us a story at the ______ of his class.(begin)

答案

答案：beginning
at the beginning of 是一个固定词组,表示“在...开始”.
翻译：我们语文老师经常在刚要上课的时候给我们讲故事.