Вопросы к everobody learns foreign language to understand people. Заранее спасибо

Does everybody learn foreign language to understand people ?(общий)Why does everybody learn foreign language?(спец)Does everybody learn foreign language to understand people or communicate with them?(альтерн) Does everybody learn foreign languages to understand people ? doesn't( he или she)и так , и так правильно( раздел ) Who does learn foreign language to understand people ?(вопрос к подлежащему)