Photo analaziation

WIN 2 TICKETS ALL EXPENSES PAID INCLUDING AIR FARES TO THE 2008 OLYMPIC GAMES IN BEIJING , CHINA .

To participate is very easy, just view the attached photo, correctly
answer the following questions and send your answers to:
International Olympic Committee, Private Bag, Lausanne, Switzerland.

1. Which student seems to appear tired / sleepy?
2. Which ones are male twins?
3. Which ones are the female twins?
4. How many women are in the group?
5. Which one is the teacher?

Good Luck! 

 http://xs221.xs.to/xs221/07472/859521.jpg