1. I’m flying to Paris today.
общий Am I flying to Paris today?
альтернативный Am I flying to Paris or To Cairo today?
разделительный I’m flying to Paris today, aren't I?
специальный wHO IS FLYING TO pARIS TODAY?
2. They ordered their dinner.
общий Did they order their dinner?
альтернативный Did they order their dinner or breakfast?
разделительный They ordered their dinner, didn't they?
специальный What did they order?
3. He visits Britain once a year.
общий Does he visit Britain once a year?
альтернативный Does he visit Britain once or twice a year?
разделительный He visits Britain once a year, doesn't he?
специальный Who visits Britain once a year?