题目内容：

Hot _______the night air was,we slept deeply because we were so tired after the long journey.
A.although B.as C.while D.however 为什么选as呢?

优质解答

B
as 做“虽然”讲时,要用倒装结构.即：
表语+as+主语+谓语（若表语是单数名词,不用不定冠词）
状语（much）+as+主语+谓语
动词（try）+as+主语+谓语