阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式.

Teenage life is full of adventures and challenges. Doing voluntary work is popular among some teenagers. And extra-curricular activities 【小题1】 (prefer) by others, such as organizing debates, studying literature, dancing ballet and cleaning up the greenhouses. But more people sign up for advanced 【小题2】 (course) out of curiosity. 【小题3】 (actual), some teenagers feel confused in their youth, and their behaviors are sometimes confusing. They think there is a generation gap between 【小题4】 (they) and adults, so experts are trying to find a suitable solution. Johnson is 【小题5】 outgoing freshman. He is so attracted to Chinese literature that he 【小题6】 (give) up his studies in Chicago and come to China since he was 10 years old. Obviously, 【小题7】 the help of his teacher, his Chinese has improved greatly and he can speak fluent Chinese on campus now. As scheduled, he will graduate from the school 【小题8】 he has stayed for a long time next year. What he is concentrating on is the ancient Chinese literature and he is 【小题9】 (interest) in Tang poetry. The topic of his research content is “the differences between Eastern and Western literature”. An editor that acts responsibly has advised him 【小题10】 (read) some classical Chinese literature first. This suggestion means a lot to him.