Here you have some exercices on line to practice your English. Remember to use a dictionary if there is a word that you don’t understand. Try this dictionary on line: www.wordreference.com.
These exercices are taken from Isabel Perez website. Hope you enjoy them!
http://www.isabelperez.com/hotpot/prs_tobe.htm
http://www.isabelperez.com/hotpot/prs_have.htm
http://www.isabelperez.com/hotpot/prn_tobe.htm
http://www.isabelperez.com/hotpot/prn_have.htm