请问老师:she had since been rushing off to the library a little more often than was strictly necessary for somebody who had no homework to do.加下划线的部分省略了什么主语?
If a person finds getting up early a problem,most probably he is very energetic in the afternoon or evening.这里的前半句为什么不是翻译成 如果一个人发现起床很早是一个问题?这个句子成分是怎么样的?