How is communication like a puzzle?

You have to take all of the bits of what is said, put them together, and get the 'complete picture'. Both people will understand each other. If the bits don't fit together, or if there are bits missing, the puzzle will be incomplete and there will be no communication. Neither person will understand the other.

travel to mexico,

you would sell things that you don't use anymore.

their's 2 things you could put in your spanish assignment.