阅读下列短文,根据短文内容填空。在未给提示词的空白处仅填写1个恰当的单词,在给出提示词的空白处用括号内所给词的正确形式填空。
I’m Adam, a freshman at senior high school. 1 (go) from junior high school to senior high is a big challenge. First, I had to think very carefully about which course I wanted to take. My adviser recommended that I should sign up for advanced literature. I had to choose extra-curricular 2 (activity), too. I joined a volunteer club. I know I had to study harder 3 a senior high school student. Studying hard isn’t always fun, 4 I’ll be well prepared for university or whatever else 5 (come).