Review:http://mrsbaiasclassroom.blogspot.com.es/2016/04/this-that-these-those-running-game-to.html
Exercise 1:
http://www.agendaweb.org/exercises/grammar/demonstratives/this-that-these-those
Exercise 2:
http://eolf.univ-fcomte.fr/wp-content/uploads/grammar/this_that_these_those/01.htm