那时,我正在填写一些文件.Translate it into English
问题描述：
那时,我正在填写一些文件.Translate it into English
Which is correct?please provide a better answer and explain in mandarin.
1)That time,I was filling in documents.
2)During the period,I was filling documents.
3)That time,I was filling documents.
答
During the period,I was filling in the documents.
that time是不地道的,填写是FILL IN,固定搭配