Задайте 4 типа вопросов к предложению : The problem of learning foreign languages is very important today

The problem of learning foreign languages is very important today. - Проблема изучения иностранных языков сегодня очень важна. General question: Is the problem of learning foreign languages very important today? Alternative question: Is the problem of learning foreign languages or Economics very important today? Tag question: The problem of learning foreign languages is very important today, isn't it? Wh-questions: What problem is very important nowadays? Why is the problem of learning foreign languages very important today?