阅读理解。 John and David are students. They are Mr. Green's sons. They get up early in the morning. They go to school by bus after breakfast. Sometimes they have lunch at school. John likes hamburgers, chicken and eggs. David likes vegetables and fruit. After lunch John goes to play volleyball and David goes to the classroom. John likes playing computer games, but David likes singing. 根据短文内容，判断下列句子正（T）、误 （F）。 1. John is a student and David is a teacher. 2. Mr. Green is John and David's father. 3. John and David have lunch at home every day. 4. John likes vegetables and fruit. 5. David likes singing and John likes playing computer games.