用括号内所给单词的适当形式补全短文。

    John likes  (read) very much. His father has a library and the boy  (read) most of the books in it. So he often  (borrow) books from the school library. He reads books when he  (be) free and does, nothing but reading at home on weekends. Once he even  (read) a novel in class because it was very interesting. Of course he couldn't hear what the teacher  (say). So he  (fall) behind. The headmaster had a talk with him and told him  (not read) novels in class. At last, he realized that he was wrong and said, "I'm sorry. I  (not do) it again." And now he reads books after he finishes  (do) all his homework.