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 _______?