英语语法学习：让步状语从句

1)_______________you believe it ___________ not, it is true. 2) Many of them turned a deaf ear to his advice, _________________（即使）they knew it to be valuable. 3) Though _______________ (warn) of the danger, he still went skating on the thin ice 4) Hot ___________ the night air was, we slept deeply because we were so tired after the long journey. 5) —Dad, I’ve finished my assignment. —Good, and ___________ you play or watch TV, you mustn’t disturb me. 6) ____________ she was a woman, ___________ she was very brave. A. Though; / B. Though; but C. But; though D. /; though