阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。
When I moved into an empty dorm (宿舍) for the first time two years ago, I was certain of a few things. Firstly, I realized that I didn't 36 anybody at the school. Secondly, I knew that l wanted to work hard at my lessons and 37 something useful. And thirdly, I wanted to have a good time with new classmates, without my parents around.
The first 38 frightened me in the beginning. But that 39 quickly disappeared. It was the other two goals 40 ended up being my difficulties. I knew that it was 41 to devote enough time to class and to social efforts. But I wanted to 42 in both. I knew this would be a 43 , but I didn't realize how much until classes began.
