Ngữ Pháp và Từ Vựng It was an interesting novel. I stayed up all nigh...

Ngữ Pháp và Từ Vựng

It was an interesting novel. I stayed up all night to finish it.
A. I stayed up all night to finish the novel so it was interesting.
B. Unless it were an interesting novel, I would not stay up all night to finish it.
C. Though it was an interesting novel, I stayed up all night to finish it.
D. So interesting was the novel that I stayed up all night to finish it.