（）the day went on,the weather got worse.A With B Since C While D As 为什么不选B?请解析并翻译句子

题目

（）the day went on,the weather got worse.A With B Since C While D As 为什么不选B?请解析并翻译句子

答案

选D
as 连词,随着的意思.
since有自从、既然的意思
随着时间的推移,天气变得越来越糟.