题目内容：

短文改错

假定英语课上老师要求同桌之间交换修改作文, 请你修改你同桌写的以下作文。文中共有10处错误, 每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加: 在缺词处加一个漏字符号（）, 并在其下面写出改加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在改词下面写出修改后的词。

注意：1. 每处错误及其修改均仅限一词；

2. 只允许修改10处，多者（从第11处起）不计分。

Mary’s friend Millie had been trying to lose weight for years. She was so afraid of being laughed by others that she followed one diet after others, but none of them real worked. She felt sad and hopeless about herself. Mary encouraged her to turn to his doctor for help. Finally, she followed her doctor's advices and began to eat a simple and balanced diet. She eats fruits and vegetables and avoided high-fat food. In addition, she joined an exercise class. She worked out three times a week. At the first, she felt tired. But encouraging by her friends, she chose to stick to it and eventually she reached her goal. Best of all, she is able to stay at her ideal weight now. That is why she has developed health habits in her daily life.