Задать 5 вопросов к предложению : the uk is separated from the continent by the english channel and the strait of dover. (general, alternative, special, tag question)

Is the UK separated...(далее по тексту)?- general;
Is the UK separated from the continent by the Straight of Dover or by the North Sea? - alternative;
What is separated from the continent by the Straight of Dover? - special;
From what is the UK separated by the English channel and the Straight of Dover? - special;
The UK is separated from the continent by the English channel and the Straight of Dover, isn't it? -tag question.