根据短文内容，用方框中所给单词的适当形式填空，每词仅用一次 (每空一词)。

Li Wen is a 15-year-old boy from the countryside. He to work very hard and he seldom caused any problems. However, his parents moved to the city to look for jobs. So he often felt lonely and unhappy. Gradually, his unhappinesshis schoolwork. He became less interested in studying. Sometimes he wasfrom classes and failed his examinations. His teacher advised his parents to communicate with himperson. Finally, Li Wen realized that his parents would takein everything good that he did. From then on, he became more outgoing and active because he knew his parents were always there for him.