The boy is at school. (Образовать отриц. предложение и задать все типы вопросов)

The boy is not at school.

Where is the boy?

Who is at school?

Вроде все так.

The boy isn't at school. - отрицательное

The boy is at school.

Is the boy at school? - общий вопрос

Is the boy or girl at school? - альтернативный вопрос

Is the boy at school or at home? - альтернативный вопрос

Where is the boy? - специальный вопрос

Who is at school? - вопрос к подлежащему

The boy is at school, isn't he? - разделительный вопрос