at that moment i ---(know)what to do at all

问题描述:

at that moment i ---(know)what to do at all

根据后面的at all 表示前面要否定,前面的at that moment 表示时态是过去式
所以填写:did not know
在那一刻,我完全不知道该怎么做

At that moment I (didn't know) what to do at all.
在那一刻,我根本不知道要做什么.
not at all,一点也不.