JUNIORS 4: 1st CONDITIONAL (REVISION)

http://www.shertonenglish.com/resources/es/conditionals/type1.php
http://www.perfect-english-grammar.com/first-conditional-exercise-1.html
http://www.englishgrammarsecrets.com/firstconditional/exercise1.html
http://www.englishgrammarsecrets.com/firstconditional/exercise2.html
http://www.englishgrammarsecrets.com/firstconditional/exercise3.html
http://www.englishgrammarsecrets.com/firstconditional/exercise4.html