Unit 1: Present simple and continuous, adverbs of frequency and quantifiers

 Present simple and continuous:

https://www.perfect-english-grammar.com/present-simple-present-continuous-1.html

https://www.perfect-english-grammar.com/present-simple-present-continuous-2.html

https://www.perfect-english-grammar.com/present-simple-present-continuous-3.html

https://www.englishtestsonline.com/present-continuous-present-simple-test-a2-b1-grammar-exercises/

Quantifiers:

https://test-english.com/grammar-points/b1/much-many-lot-little-no/  (there are three exercises)

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

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

https://www.englisch-hilfen.de/en/exercises/confusing_words/much_many3.htm

https://www.englisch-hilfen.de/en/exercises/confusing_words/much_many2.htm

https://www.englisch-hilfen.de/en/exercises/confusing_words/much_many5.htm

Adverbs of frequency:

https://learnenglishteens.britishcouncil.org/grammar/a1-a2-grammar/adverbs-frequency (with explanation)

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

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

https://test-english.com/grammar-points/a1/adverbs-frequency/