1.Probably/Maybe.大概吧！

2.Not exactly.不完全是

3.I don't know for sure.我不是很确定。

4.Something like that.差不多吧!

5.I guess so.我想是吧。

6.Sort of 有那么点儿吧!

7.I can't say.我说不准!

8.That might be true.也许是真的吧!

9.I'm not sure for that.我不太清楚。