1 Last summer I was in a language school in Malta,wasn’t I? Разделительный
2 Where were you last summer? Специальный или Where was I last summer?
3 Who was in a language school in Malta last summer? Вопрос к подлежащему
4 Were you in a language school in Malta last summer or last autumn? Альтернативный или Was I in a language school in Malta last summer or last autumn?
5 Were you in a language school in Malta last summer? Общий
Или Was I in a language school in Malta last summer? Общий
6 When was I in a language school in Malta? Специальный
Или When were you in a language school in Malta?