Will and going to

1. http://www.englisch-hilfen.de/en/exercises/tenses/will_going_to_future.htm
2. http://www.better-english.com/grammar/willgo.htm
3. http://www.saberingles.com.ar/exercises/103.html

Should / Shouldn’t

1. http://www.learn-english-online.org/Lesson51/Lesson51.html
2. http://www.eclecticenglish.com/grammar/Should1A.html
3. http://www.oup.com/elt/global/products/naturalenglish/pre/a_grammar/unit09/nepre_grammar09_2/

May / may not/might/ might not

1. http://www.english-grammar-lessons.com/maymight/menu.php
2. http://perso.wanadoo.es/autoenglish/gr.may.p.htm
3. http://www.englishpage.com/modals/might.html

Would / wouldn’t

1. http://www.tolearnenglish.com/exercises/exercise-english-1/exercise-english-516.php
2. http://www.wordpower.ws/grammar/gramex08.html

Going to and present progressive for the future.

1. http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13478.php
2. http://www.eclecticenglish.com/grammar/PresentContinuous1F.html

Present Perfect

1. http://www.englishpage.com/verbpage/presentperfect.html
2. http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/upperf.htm
3. http://www.better-english.com/grammar/presentperfect1.htm

Review of present perfect and simple past

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

First conditional

1. http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/1cond.htm
2. http://www.englishgrammarsecrets.com/firstconditional/menu.php
3. http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/1cond1.htm

Relative pronouns

1. http://www.englishpage.com/minitutorials/who_whom.html
2. http://www.learnenglishfeelgood.com/lefg2_whowhichwhose1.html
3. http://www.englisch-hilfen.de/en/exercises/pronouns/relative_pronouns.htm

Have to / had to

1. http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/learnitv25.shtml
2. http://www.englisch-hilfen.de/en/grammar/have_to.htm

Adjectives

1. http://www.manythings.org/vq/mc-adj.html
2. http://tell.fll.purdue.edu/JapanProj/FLClipart/Adjectives.html
3. http://www.ompersonal.com.ar/omgrammar/listadeadjetivoscalificativos.htm

Comparative and superlative adjectives.

1. http://langues.cmaisonneuve.qc.ca/clakoff/GRAMMAR%20LINKS/comparativesuperlative.htm
2. http://www.usingenglish.com/quizzes/45.html
3. http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/regcom1.htm

Verbs in Past Participle

1. http://www.studyspanish.com/lessons/pastpart.htm
2. http://www.myenglishteacher.net/irregular_verbs.html
3. http://www.grammar-quizzes.com/participles1.html