Agreed, please include sound with the answer, i.e. at the end, after we make our choice, whether we choose correctly or incorrectly, being able to hear the correct answer being pronounced would be a big improvement! Keep up the great work!
Please don't down vote people who are trying to help others on the site. There is sound on the site but some people are having sound problems. People who do not have sound where there should be sound should turn in a Bug Report to Duolingo.