4. There is no apostrophe (') in the possessive
adjective "its". We use an apostrophe to write
the short form of "it is" or "it has". For
example:
it's raining = it is raining
it's finished = it has finished
I'm taking my dog to the vet. It's broken its
leg.
5. TIME TO PRACTICE
Listen the possessives and do the exercises
http://www.learnamericanenglishonline.com/Blue
%20Level/B14%20Possessive%20Adjectives.htm
l
http://www.englishexercises.org/makeagame/vie
wgame.asp?id=1737
http://mrsc.free.fr/6-6-07-adjpos.htm