Tú eres la maestra / el maestro!

TENER

http://www.quia.com/cm/16824.html?AP_rand=312130961

http://www.quia.com/rr/143871.html

http://www.quia.com/ba/87009.html

IR

http://www.studyspanish.com/lessons/estarirdar.htm

http://www.quia.com/mc/322544.html

http://www.quia.com/rr/156855.html

SER

http://www.studyspanish.com/lessons/serest2.htm

just look at the first 4 sections of above site http://www.quia.com/cb/75390.html

http://www.quia.com/cc/407628.html

ESTAR

http://www.quia.com/jg/322542.html

http://www.quia.com/jg/389515.html

http://www.quia.com/cm/27157.html?AP_rand=1426357875

ESTAR vs SER

http://www.quia.com/rr/74364.html