Present Perfect FOR and SINCE

http://www.englishexercises.org/makeagame/viewgame.asp?id=1394

http://www.englishexercises.org/makeagame/viewgame.asp?id=5876

http://www.ego4u.com/en/cram-up/vocabulary/since-for

Future Will

Mixed sentences
http://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises

Questions.
http://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises?04

First Conditional.

Questions.
http://www.english-4u.de/underl_word_ex1.htm
http://www.english-4u.de/underl_word_ex2.htm

Affirmative.
http://www.perfect-english-grammar.com/first-conditional-exercise-1.html
http://www.englishexercises.org/makeagame/viewgame.asp?id=3226
http://www.learnenglish-online.com/grammar/tests/1stconditional.html

Affirmative and Negative.
http://www.esl-lounge.com/student/grammar/2g24-first-conditional-exercise.php
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/1cond2.htm

Song.
http://en.subingles.com/exercises/view/970/Beginner

Past Continuous vs Past Simple.

http://www.englishpage.com/verbpage/verbs3.htm
http://www.englishpage.com/verbpage/verbs4.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=734
http://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-1.html

Past Continuous Exercises.

Affirmative.
http://www.ego4u.com/en/cram-up/grammar/past-progressive/exercises?04
http://www.learnenglish-online.com/grammar/tests/pastcontinuous.html

Mixed.
http://www.autoenglish.org/gr.pascon.i.htm
http://www.myenglishpages.com/site_php_files/grammar-exercise-past-progressive.php

Past Simple and Ago

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-51733.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-18613.php

Past Simple. Nightmare Vacations.Exercises.

http://www.esl-lounge.com/level1b/level-1b-elementary-nightmare-vacations-writing-practice.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-18304.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-5166.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-81354.php
http://www.ego4u.com/en/cram-up/grammar/simple-past/exercises?04
http://www.ego4u.com/en/cram-up/grammar/simple-past/exercises?05
http://www.ego4u.com/en/cram-up/grammar/simple-past/exercises?06

Possessive Adjectives

http://www.letshavefunwithenglish.com/games/possessive_adjectives/index.html
http://www.learn-english-online.org/Lesson27/TestIt/PossessiveAdjectives.htm
http://www.esl-lounge.com/student/grammar/1g39-possessive-adjectives.php
http://www.myenglishpages.com/site_php_files/grammar-exercise-possessive-adjectives.php

Present Simple or Continuous?

Here you have some exercises.

http://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises
http://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex10
http://www.englishpage.com/verbpage/verbs1.htm
http://www.usingenglish.com/quizzes/66.html
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13689.php
http://www.e-grammar.org/present-simple-continuous/test1-exercise1/
http://www.e-grammar.org/present-simple-continuous/test1-exercise3/

Present simple or continuous. Exercise 1

How often... adverbs of frequency. Slideshare and exercises.

http://www.slideshare.net/111083/adverbs-of-frequency-dennise

Exercises.
http://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adverbs_of_frequency.htm

Opposite adjectives

http://www.ibericostierradesalamanca.com/englishweb/oppositeadjectives.html

Word Order

http://www.ibericostierradesalamanca.com/englishweb/wordorder.html

How to describe my room.

Cities.Cost of living.

Comparatives and superlatives.