SIMPLE PRESENT

Exercise 1: http://www.eslgamesplus.com/present-simple-verbs-game/

Exercise 2: http://www.isabelperez.com/happy/tenses/exercises/present_1.htm

Exercise 3: http://www.isabelperez.com/happy/tenses/exercises/present_2.htm

Exercise 4:http://www.eslgamesplus.com/present-simple-tense-action-verbs-interactive-monkey-game/ 

Exercise 5: http://www.isabelperez.com/happy/tenses/exercises/pres_simple_quest1.htm

Exercise 6: http://www.englishexercises.org/makeagame/viewgame.asp?id=1052

Exercise 7: http://www.englishexercises.org/makeagame/viewgame.asp?id=2975

Exercise 8: http://www.englishexercises.org/makeagame/viewgame.asp?id=9034

Exercise 9: http://www.usingenglish.com/quizzes/65.html

Exercise 10: http://www.eslgamesplus.com/action-verbs-esl-interactive-grammar-vocabulary-game-present-tense/

Exercise 11: https://www.gamestolearnenglish.com/basketball/

Exercise 12: http://englishkidsfun.blogspot.com.es/2011/11/present-simple-online-activities.html

Exercise 13: http://www.englishexercises.org/millionpounddrop/game.asp?id=10170

FREQUENCY ADVERBS

Exercise 1:  http://www.eslgamesplus.com/adverbs-of-frequency-hangman-spelling-game-for-esl-efl-practice/

Exercise 2: http://learnenglishkids.britishcouncil.org/en/grammar-games/adverbs-frequency

Exercise 3: http://www.myenglishpages.com/site_php_files/grammar-exercise-adverbs-frequency.php#.UxhJXs6mWxo

Exercise 4: http://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adverbs_of_frequency.htm

Exercise 5: http://jerome.boulinguez.free.fr/english/file/hotpotatoes/adverbesfrequence.htm

Exercise 6: http://www.autoenglish.org/basic/frequencypal/frequency.html

Exercise 7: http://www.englishexercises.org/makeagame/viewgame.asp?id=1400

Exercise 8: http://mrsc.free.fr/5-5-advrecogn.htm

Exercise 9: http://www2.arnes.si/~oskplucija4/ces/howoften.htm

Exercise 10: https://elt.oup.com/student/solutions/elementary/grammar/grammar_02_012e?cc=global&selLanguage=en