Second Conditional

4.http://www.english-grammar-lessons.com/secondconditional/exercise1.swf
5.http://www.english-grammar-lessons.com/secondconditional/exercise2.swf
6.http://www.english-grammar-lessons.com/secondconditional/exercise3.swf
7.http://www.english-grammar-lessons.com/secondconditional/exercise4.swf