Составить 4 типа вопросов к предложениям общий специальный альтернативный разделительный 1)you may any foreign language. 2)the problem of learning foreign languages is very important today. 3)over 350 million people speak it as a mother tongue

2.  Is the problem of learning foreing languages important today?
What's the most important problem today?
Is the problem of learning foreign languages very important today or not?
 The problem of learning languages is important, isn't it?
3. Do they speak it as a mother tongue?
How many people speak it as a mother tongue?
They speak it as a mother tongue or not?
Over 350 million people speak it, don't they?