Idioms are used very often in real English conversation. So it is important to learn many idioms when you are learning English.
In this video lesson, Joe talks about the English language idiom “Up In The Air”.
If something is “up in the air” then it has not yet been decided; it is undecided.
Idioms are commonly used in real English conversation. So if you want to learn real English and speak English fluently it is important to learn many idioms.