题目

阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。OnMarch 16, 2020 my left leg was injured. At that time, I thought it was a simpleinjury, but a medical doctor later told me that it was a serious fracture(骨折) and that I would have to be in bed for three months. It wasshocking for me. I'd never spent more than 8 hours in bed before.Iam a full-time social worker and have many projects that require my activeinvolvement(参加). I hardly had time tovisit my home, but my fractured leg stopped all things. I had to stay at homefor a lon根据图（1）、图（2）、图（3）的规律判断图（4）中有    个三角形.