Forms 5b, 5c, 5d. PRESENT SIMPLE

 For practicing:

PRESENT SIMPLE

https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_statements.htm;

https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_negation_long.htm;

https://www.englisch-hilfen.de/en/exercises/tenses/questions_answers_simple_present.htm;

https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_mix.htm;

https://www.english-4u.de/en/grammar/present-simple.htm;

https://learnenglish.britishcouncil.org/grammar/english-grammar-reference/present-simple;

ADVERBS OF FREQUENCY

https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adverbs_of_frequency.htm;

https://www.myenglishpages.com/english/grammar-exercise-adverbs-frequency.php?utm_content=cmp-true;

https://elt.oup.com/student/solutions/elementary/grammar/grammar_02_012e?cc=lt&selLanguage=en;

LOVE/LIKE/HATE + V-ing

https://elt.oup.com/student/englishfile/beginner3/grammar/file08/grammar08_b01?cc=lt&selLanguage=en;

https://learnenglishkids.britishcouncil.org/grammar-vocabulary/grammar-practice/like-ing.

Forms 6c, 6d. MODALS. COUNTABLE AND UNCOUNTABLE NOUNS

For practicing:

MODALS

https://www.englisch-hilfen.de/en/exercises/modals/must_not.htm;

https://www.englisch-hilfen.de/en/exercises/modals/must_not2.htm;

https://agendaweb.org/exercises/verbs/modals/should-shouldnt.htm;

https://elt.oup.com/student/solutions/elementary/grammar/grammar_05_022e?cc=lt&selLanguage=en;

https://www.grammarbank.com/can-cant-exercises.html;

https://test-english.com/grammar-points/a1/can-cant/;

https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-87468.php;

COUNTABLE AND UNCOUNTABLE

https://www.englisch-hilfen.de/en/exercises/confusing_words/some_any3.htm;

https://www.englisch-hilfen.de/en/exercises/confusing_words/some_any.htm;

https://elt.oup.com/student/solutions/preint/grammar/grammar_03_012e?cc=lt&selLanguage=en;

https://www.english-4u.de/en/grammar-exercises/quantifiers.htm.