按要求变换句型。
1. He used to walk to school.(改为一般疑问句)
_____ he ____ to walk to school.
2. Danny asked Sandy if she could swim.(改为直接引语)
Danny asked, “_____ _____ swim,Sandy?”
3. Simon said, “I am very busy.”(改为间接引语)
Simon said that_____ _____ very busy.
4. The teacher said to him, “Don’t sleep in class.”(改为间接引语)
The teacher told him_____ _____ ____ in class.
5. His uncle is a doctor.(对划线部分提问)
_______ _____ his uncle_______?