It wasso late ,__the famers went on working in the field.

问题描述:

It wasso late ,__the famers went on working in the field.
A.andB.orC.soD.but应该是but吧?可答案怎么是so呢?是不是答案出错了.请帮忙分析一下,谢谢!

答案错了
D对的