That little boy can pick up a tune immediately on the violin, he really has a _____for music.   

The author had qualified as a doctor but later gave up the _____ of medicine for full-time writing.

-------He says that my new car is a ____________ of money. -------Don’t you think those words are just sour grapes? 

His_______ was so strong that I couldn’t understand a word he was saying.

No one has yet discovered who is responsible for the incident but the police are already collecting ______．