have no doubt 是毫无疑问,他的反义词不确定是什么?

问题描述:

have no doubt 是毫无疑问,他的反义词不确定是什么?

I'mnotsure
not sure
not confirmed
doubt
uncertain
i'm not sure
Indetermination
I don't know for sure
Not sure!
It depends
这个比较好,很地道:I don't know for sure