Idioms are used all the time and unless you recognize when an idiom is being used, what you read or hear ______ can easily be misunderstood 

----Who is going to ______ prizes  to  the  winners? ----- The headmaster,  of  course .

The little boy has never been to Beijing, ________he ?

— Will you go to the annual meeting to be held in Sweden from the 26-30th of August 2008?— That depends on _______ I am invited.

—I don’t know how to deal with it. --Well. I recommend that you ______ some professional advice.