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?
答
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