1. I’ll be free next Saturday. (改为一般疑问句)
　 　__ you____ free next Saturday?
　2. You had better go to school today. (改为否定句)
　 　You 　　 　　 　　 go to school today.
　3. Her favorite sport is swimming.(对划线部分提问)
　　 　__ 　her favorite sport?
　4. I will play football with my friends for 2 hours. (同上)
　　 _____ 　　 will you play football with your friends?
　5. They had a very exciting party yesterday. (用tomorrow替换yesterday)
　　 They _　 　_____ a very exciting party tomorrow.