句型转换。 1. He started to learn the piano when he was five years old. He started _____ the piano at the _____ of five. (同义句) 2. He was first in the competition. He _____ first prize in the competition. (同义句) 3. I took part in the school football team last year. I _____ the school football team last year. (同义句) 4. He hiccupped for 69 years and 5 months . (对画线部分提问) _____ _____ did he hiccup? 5. I was born in Beijing,  in 1988 . (对画线部分提问) _____ and _____ were you born? 6. I think there is something wrong with his plan. (改为否定句) I _____ think there is _____ wrong with his plan.