задать 4 типа вопросов: разделительный, общий, альтернативный, специальный. к предложению: Britain has for centuries

1. Has Britain for centuries encouraged research and innovation and its record of achievements been maintained throughout the twentieth century?

2. Britain has for centuries encouraged research and innovation and its record of achievements has been maintained throughout the twentieth century, hasn\'t it?

3. Has Britain for centuries encouraged research and innovation and its record of achievements been maintained throughout the twentieth or the nineteenth century?

4. What has Britain encouraged for centuries?