1. 1968 Summer Olympics   Mexico City   Seoul   Berlin   St. Louis   Hint Half-n-half Clue   2. 1900 Summer Olympics   Paris   Mexico City   Antwerp   Montreal   Half-n-half Clue   3. 1948 Summer Olympics   Los Angeles   Atlanta   London   Tokyo   Half-n-half Clue   4. 2004 Summer Olympics   Atlanta   Athens   Beijing   Helsinki   Half-n-half Clue   5. 1904 Summer Olympics   St. Louis   London   Montreal   Athens   Half-n-half Clue   6. 1944 Summer Olympics   Rome   London   Beijing   Los Angeles   Half-n-half Clue   7. 1936 Summer Olympics   Montreal   Berlin   Seoul   Sydney   Half-n-half Clue