to be perfectly honest 老实说
To be perfectly honest, pollution is unavoidable in modern city.
老实说吧，污染在现代成都市里是不可避免的。
To be perfectly honest, I feei like you might spit in it.
说实话，我觉得你会往里面吐口水。

freak out 吓坏了
This photo will only make her freak out.
这张照片只会让她抓狂。
I am sure they do not want people to freak out.
我肯定他们并不想让人们焦虑不安。

hope for the best 抱乐观的态度，从好的方面着想
We can hope for the best but should be prepared for the worst.
我们可以抱最好的希望，但应该做好最坏的准备。
Doubt the worst and hope for the best.
担心最坏的，希望最好的。