WILL OR GOING TO

http://www.englishexercises.org/makeagame/viewgame.asp?id=3135

http://www.englishpage.com/verbpage/verbs18.htm

http://www.englisch-hilfen.de/en/exercises/tenses/will_going_to_future.htm

REPORTED SPEECH

http://www.agendaweb.org/verbs/reported_speech-exercises.html

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

http://www.myenglishpages.com/site_php_files/grammar-exercise-reported-speech.php

http://www.englisch-hilfen.de/en/exercises_list/reported.htm

PAST SIMPLE AND PAST PERFECT

http://www.perfect-english-grammar.com/past-perfect-exercise-3.html

http://www.english-4u.de/past_perfect_ex5.htm

http://www.englishexercises.org/makeagame/viewgame.asp?id=6347

PAST SIMPLE AND PRESENT PERFECT EXERCISES

http://www.usingenglish.com/quizzes/228.html

http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/ppvpast1.htm

http://www.curso-ingles.com/practicar/ejercicios/present-perfect-vs-past-simple

PAST PERFECT SIMPLE EXERCISES

https://www.ego4u.com/en/cram-up/grammar/past-perfect-simple/exercises

http://www.agendaweb.org/verbs/past_perfect-exercises.html

PRESENT PERFECT SIMPLE EXERCISES

http://www.agendaweb.org/verbs/present_perfect-exercises.html

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

https://www.ego4u.com/en/cram-up/grammar/present-perfect-simple/exercises