Useful English

  https ://www.native-english.ru/tests/little-a-little-few-a-few

http://grammar-tei.com/present-perfect-tense-exercises-uprazhneniya-na-otrabotku-present-perfect-simple/

https://myefe.ru/quizzes/tests-countable-uncountable-nouns  

  https ://www.google.com/amp/s/infoeng.ru/exercises/past-simple-exercises/amp/

  http://grammar-tei.com/zero-conditional-pravila-obrazovaniya-i-ispolzovaniya-teoriya-i-uprazhneniya/