Write the meaning of the following idoms/phrases and make sentences with them: 

Out of the blue means ----- unexpectedly

The decision came out of the blue

a to z - (including everything)

= His book tells the story of her life from a to z.

 The tip of the iceberg (only a small part of a much larger problem) 

=These small local protests are just the tip of the iceberg.

 Pay through the nose (to pay too much money for something)

= We paid through the nose to get the car fixed.

Have bigger fish to fry  (to have more important or more interesting things to do) 

= I can't help you right now because I have a bigger fish to fry.