句型转换。
按要求改写下列各句。
1.He often goes skateboarding.(否定句)
______________________________________________________
2.My favorite food is hamburger. (划线部分提问)
______________________________________________________
3.Most students go to school by bike. (同义句)
______________________________________________________
4.Sandra goes shopping three times a week. (划线部分提问)
______________________________________________________
5.His grandparents are very healthy. (同义句)
______________________________________________________
