Possessives

http://www.1-language.com/englishcourse/unit16_dialogues.htm

http://www.1-language.com/englishcourse/unit16_grammar.htm

http://www.1-language.com/englishcourse/unit16_grammar_exs.htm

http://www.1-language.com/englishcourse/unit16_grammar_exs2.htm