2014年高考英语二轮复习单项填空 拉分题（较难题目）特训：并 列句
1. Hot_____the night air was, we slept d eeply because we were so tired af ter the long journey.
A. although B. as C. while D. however
2. Life is what happens to you _____you’ re busy making other plans.
A. while B. since C. as D. once
3. He must have mistaken me as someone he knew, ____ I didn't know him at all.
