Level 4

Present Perfect:

1. http://eslgamesworld.com/members/games/grammar/perfectpast/spin%20wheel%20present%20past%20tenses.html?zoom_highlight=simple+past+tense
2. http://www.agendaweb.org/verbs/present_perfect-exercises.html

Medical Vocabulary Game:

http://www.sheppardsoftware.com/web_games_vocab_med.htm

Question Practice:

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

Past Progressive:

1. http://www.englisch-hilfen.de/en/exercises/tenses/past_progressive_statements.htm
2. http://www.englisch-hilfen.de/en/exercises/tenses/past_progressive_mix.htm
3. http://www.englisch-hilfen.de/en/exercises/tenses/past_progressive_mix2.htm
4. http://www.englisch-hilfen.de/en/exercises/tenses/past_progressive_negation_sentences2.htm

Present Perfect Continuous:

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

Listening Practice/Grocery Shopping:

http://www.esl-lab.com/supermarket/supermarketrd1.htm

Idioms:

http://a4esl.org/q/h/idioms.html

Modals:

1. http://www.learnenglishfeelgood.com/esl-mixed-modals1.html
2. http://www.eslgamesplus.com/modal-verbs-can-could-might-must-should-would-catapult/
3. http://www.agendaweb.org/verbs/modals-exercises.html

Comparative Adverbs:

1. http://www.learnenglishfeelgood.com/english-adverbs-comparative1.html
2. http://www.eflnet.com/grammar/compsupadv1.php
3. http://www.englisch-hilfen.de/en/exercises_list/adjektiv_adverb.htm

Prepositions (since and for):

1. http://grammar.ccc.commnet.edu/GRAMMAr/quizzes/preposition_quiz1.htm
2. http://www.agendaweb.org/grammar/for_since_already-exercises.html

Infinitives (some Gerunds):

1. http://www.perfect-english-grammar.com/gerunds-and-infinitives-exercise-1.html
2. https://www.quia.com/quiz/731238.html?AP_rand=1668738928
3. https://learnenglishkids.britishcouncil.org/en/grammar-practice/infinitives

Reduced Speech:

1. https://www.youtube.com/watch?v=ZMGQWgM9VSY
2. https://www.youtube.com/watch?v=jHaCKjahHHQ
3. https://www.youtube.com/watch?v=n5nZpo3YFTg

Expressing a Complaint:

http://www.myenglishpages.com/site_php_files/communication-lesson-complaininig.php