His sister studies at school.

Нужно сделать

1. общий

2. специальный

3. к подлежащему

4. альтернативный

5. разделительный

His sister studies at school

1 Does his sister study at school?

2 Where does his sister study?

3 Who studies at school?

4 Does his sister study at school or at university?

5 His sister studies at school, doesn't she?