1)[B]I'm bone dry[/B]. I am thirsty.
2)[B]Wild guess[/B] - just taking a stab at it, just guessing without much thought.
3)It will get you through.- it will get you by.
4)Make it count! - make every decision carefully - there is no room for mistakes, make it important, meaningful.
5)It's not the end of the world.- It's not as bad as you think.
6)I don`t know what he was on about.- I don't know what he was talking about.