I. Специальный вопрос (special question):
1) How much time does Alan spend writing letters every day?
2) On what does Alan spend a lot of time every day?
3) How does Alan spend a lot of time every day?
II. Общий вопрос (general question):
Does Alan spend a lot of time every day writing letters?
III. Альтернативный вопрос (alternative question):
Does Alan spend a lot of time every day writing letters or reading books?
IV. Разделительный вопрос (tag-question/ disjunctive question):
Alan spends a lot of time every day writing letters, doesn’t he?
V. Вопрос к подлежащему (question to the subject):
Who spends a lot of time every day writing letters?
[VI. Вопрос в косвенной речи:]
I would like to know if Alan spends a lot of time every day writing letters?