按要求改写下列句子。

1．We study English together.（根据A句完成B句，使两句意思相近）

      ________ ________ English together.

2．The man in the white car is his father.（对划线部分提问）

      ________ ________ is his father?

3．She read the book under the tree yesterday afternoon（改成一般疑问句）

      ________ she ________ the book under the tree yesterday afternoon?

4．He has to work for ten hours every day.（对划线部分提问）

     ________ ________ ________ he ________ to work every day?

5．A．The doctor can do nothing to help the boy.（根据A句完成B句，使两句意思相近）

     B．The doctor ________ ________ ________ to help the boy.