QUIZ:
https://wordwall.net/resource/5497363/future-will-present-simple-present-continuous-going-to
For practicing:
STATIVE VERBS
https://www.perfect-english-grammar.com/stative-verbs-exercise.html;
https://usefulenglish.ru/grammar/tenses-exercise-four;
https://www.englishgrammar.org/state-verbs-exercise/;
RELATIVE CLAUSES: DEFINING AND NON-DEFINING
https://www.ego4u.com/en/cram-up/grammar/relative-clauses;
https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?04;
https://test-english.com/grammar-points/b2/relative-clauses/;
https://www.englishrevealed.co.uk/FCE/fce_grammar/relative_clauses_defining_and_non_defining.php.
QUIZ:
SATISFACTORY LEVEL
For practicing:
WAS/WERE; HAD; COULD
https://www.englisch-hilfen.de/en/exercises/tenses/was_were.htm;
https://www.english-4u.de/en/tenses-exercises/was-were.htm;
https://agendaweb.org/verbs/to-have-past-exercises.html;
https://www.engblocks.com/grammar/exercises/modal-verbs/can-cant-could-couldnt/?utm_content=cmp-true;
https://www.perfect-english-grammar.com/modal-verbs-of-ability-exercise-1.html;
https://www.englisch-hilfen.de/en/exercises/tenses/be_have_simple_present_simple_past.htm;
PAST SIMPLE. REGULAR VERBS
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_ed3.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_ed.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_statements.htm;
https://www.adelescorner.org/grammar/past_tense/past_regular.html;
https://www.englisch-hilfen.de/en/exercises/tenses/questions_answers_simple_past.htm;
For SATISFACTORY level:
https://test-english.com/grammar-points/b1/present-simple-present-continuous/;
For BASIC level:
https://test-english.com/grammar-points/b1/present-simple-present-continuous/2/;
For UPPER level:
https://test-english.com/grammar-points/b1/present-simple-present-continuous/3/.
For practicing:
PASSIVE VOICE
https://www.englisch-hilfen.de/en/exercises/active_passive/active_or_passive1.htm;
https://www.englisch-hilfen.de/en/exercises/active_passive/active_or_passive2.htm;
https://www.englishgrammar.org/active-passive-voice-exercise-8/;
https://www.english-grammar.at/online_exercises/passive-voice/pa010-active-passive.htm;
https://www.english-grammar.at/online_exercises/passive-voice/pa007-active-passive.htm;
https://www.englisch-hilfen.de/en/exercises/active_passive/sentences_gaps.htm;
https://www.ego4u.com/en/cram-up/grammar/passive/exercises?06;
REFLEXIVE PRONOUNS
https://www.englisch-hilfen.de/en/exercises/pronouns/reflexive_pronouns.htm;
https://www.english-4u.de/en/grammar-exercises/reflexive-pronouns.htm;
https://www.english-4u.de/en/grammar-exercises/reflexive-pronouns2.htm;
QUESTION TAGS
https://www.perfect-english-grammar.com/question-tags-exercise-1.html;
https://www.englisch-hilfen.de/en/exercises/questions/question_tags3.htm;
https://www.ego4u.com/en/cram-up/grammar/question-tags/exercises;
https://www.english-4u.de/en/grammar-exercises/question-tags5.htm;
SOME/ANY/EVERY/NO & COMPOUNDS
https://www.englishexercises.org/makeagame/viewgame.asp?id=433;
https://elt.oup.com/student/solutions/int/grammar/grammar_08_022e?cc=lt&selLanguage=en;
https://test-english.com/grammar-points/a2/something-anything-nothing-etc/.