The crew worked so hard that they finished the entire project three days ____of schedule.
问题描述：
The crew worked so hard that they finished the entire project three days ____of schedule.
A,forward B,ahead C,sonn D,advantage 为什么选B 希望你们能帮我解决下啊!
答
ahead of schedule 是固定搭配啊
在句子里的意思就是 提前完工