TO BE VERB EXERCISES

     http://www.esl-lounge.com/student/grammar-guides/grammar-elementary.php 

  

http://www.eclecticenglish.com/grammar/PresentSimpleToBe1A.html

                               

 http://a4esl.org/q/f/x/xz85mbs.htm

http://www.myenglishpages.com/site_php_files/grammar-exercise-be-present.php

http://www.englishforeveryone.org/PDFs/To_Be_Print_All.pdf