You don't need an array.  You know the list of words is 1000. Generate a
random number between 1-1000 and read the file up to that number.  Display
the word.  Then it gets a little tough - a loop to get keyboard input,
see if the letter is in the word, blank that letter if it is, and display
the modified word.  Start all over again when a word is solved. 

You're using an insanely powerful language.  Try to avoid bugs that start
an atomic war.