He has been__ the book since last September.A writing on B working on C writing at D working at选哪个,原因是?

分类: 作业答案 • 2022-01-02 15:45:03

问题描述：

He has been__ the book since last September.
A writing on B working on C writing at D working at
选哪个,原因是?

答

B working on 专注于某一件事可以是读书或者创作书另 Writing是及物动词不用加介词所以A C不对 Working at的词组搭配不对