English Tenses
Present simple/continuous exercise
http://www.perfect-english-grammar.com/present-simple-present-continuous-1.html
http://www.perfect-english-grammar.com/present-simple-present-continuous-2.html
http://www.perfect-english-grammar.com/present-simple-present-continuous-2.html
Present Perfect
http://www.perfect-english-grammar.com/present-perfect-exercise-1.html
http://www.perfect-english-grammar.com/present-perfect-exercise-2.html
http://www.perfect-english-grammar.com/present-perfect-exercise-3.html
http://www.perfect-english-grammar.com/present-perfect-exercise-4.html
http://www.perfect-english-grammar.com/present-perfect-exercise-5.html
Present Perfect vs. Past Simple
http://www.perfect-english-grammar.com/past-simple-present-perfect-1.html
http://www.perfect-english-grammar.com/past-simple-present-perfect-2.html
http://www.perfect-english-grammar.com/past-simple-present-perfect-3.html
http://www.perfect-english-grammar.com/past-simple-present-perfect-4.html
More exercies - tenses and irregular verbs
https://www.perfect-english-grammar.com/grammar-exercises.html
Phrasal Verbs
https://www.perfect-english-grammar.com/phrasal-verbs-exercise-1.html
https://www.perfect-english-grammar.com/phrasal-verbs-exercise-2.html
https://www.perfect-english-grammar.com/phrasal-verbs-exercise-3.html
http://www.roadtogrammar.com/phrasalverbs/
http://www.businessenglishresources.com/phrasal-verbs.../
Make or Do
https://www.perfect-english-grammar.com/make-or-do-exercise-1.html
https://www.perfect-english-grammar.com/make-or-do-exercise-2.html
https://www.perfect-english-grammar.com/make-or-do-exercise-3.html
https://www.perfect-english-grammar.com/make-or-do-exercise-3.html
Connectors
https://www.englishgrammar.org/sentence-connectors.../
https://agendaweb.org/grammar/conjunctions.html
https://www.proprofs.com/quiz-school/quizshow.php...
https://www.perfect-english-grammar.com/linking-words-contrast-exercise-1.html
https://www.english-grammar.at/online_exercises/connectives/con015.htm
Many more exercises on connectors
https://www.english-grammar.at/online_exercises/connectives/connectives-index.htm
Business Jargon
https://www.businessenglishsite.com/business-english-test1.html?
https://www.businessenglishsite.com/basic-business...
https://www.businessenglishsite.com/modern-business...
https://www.businessenglishsite.com/business-english...