听短文，选答案。 1. How old was David when he went to the middle school? A. 12 B. 13 C. 14 2. When he was in the first y ear of middle school, David always __ . A. took the bus to school. B. went to school by bike. C. ran to school. 3.How did David get his computer? A. The school gave it to him B. His parents bought it for him. C. He bought it for himself. 4. After he got the computer, __ . A. David's grades were not so good as before B. David's grades were better than before. C. David studied as hard as before. 5. David felt __ when he heard his mother's words A. bored. B. happy. C. sorry.