Modal Verbs III

http://www.myenglishpages.com/site_php_files/grammar-lesson-modals.php

Modal Verbs II

http://www.gingersoftware.com/grammarbook/verbs/modal-verbs/

Modal Verbs

http://esl.fis.edu/grammar/rules/modal.htm

Reported Questions

http://www.englishexercises.org/makeagame/viewgame.asp?id=3764

Reported Question I

http://www.englisch-hilfen.de/en/exercises/reported_speech/questions.htm

Reported Statement III

http://www.eslpartyland.com/quiz-center/rptspeech1.htm

Reported Statement II

http://theenglishcafe.blogspot.com/2009/04/exercises-reported-speech-statements.html

Reported Statement I

http://www.perfect-english-grammar.com/reported-speech-exercises.html

Indirect Questions III

http://www.learnamericanenglishonline.com/Orange%20Level/Exercises_for_the_Orange_Level/Exercise_7_indirect_speech_questions.html

Indirect Questions II

http://tx.english-ch.com/teacher/jocelyn/level-b/indirect-questions/

Indirect Questions I

http://gmx.xmu.edu.cn/ews/exercises/grammar/02/02ex09.htm