VERB TO BE

LET'S PRACTICE THE FORM AND USE OF THE VERB TO BE
http://www.englishexercises.org/makeagame/viewgame.asp?id=3053

TO BE - JOBS
http://www.englishexercises.org/makeagame/viewgame.asp?id=1017

TO BE - SHORT ANSWERS
http://www.englishexercises.org/makeagame/viewgame.asp?id=8262

EXPLANATION

http://www.learnenglish.be/gr1_tobe_study.htm

EXERCISE AFFIRMATIVE 
http://www.learnenglish.be/gr1_tobe_ex1.htm

EXERCISE NEGATIVE
http://www.learnenglish.be/gr1_tobe_ex3.htm

EXERCISE INTERROGATIVE
http://www.learnenglish.be/gr1_tobe_ex3.htm 

Practice a lot! Please let me know any doubt.