Present perfect vs past simple

https://www.engvid.com/present-perfect-or-past-simple/ 

https://www.youtube.com/watch?v=AM3RydRXn_g

https://www.youtube.com/watch?v=eA2_i2yDaAo

http://www.perfect-english-grammar.com/present-perfect-or-past-simple.html

https://www.ego4u.com/en/cram-up/grammar/simpas-preper

http://www.learnenglishfeelgood.com/simple-past-present-perfect1.html

https://www.ego4u.com/en/cram-up/grammar/tenses

Corso Business English base 2 - Telephone English vocabulary and exercises

TELEPHONE ENGLISH

http://englishlessonsluisapuppo.blogspot.com/2016/10/corso-inglese-intermedio-ebt-telephone.html

http://www.englishclub.com/speaking/telephone.htm

http://usefulenglish.ru/phrases/phrases-exercise-four

http://www.5minuteenglish.com/feb19.htm

The 4 conditionals

Video

Explanation + exercises

https://www.perfect-english-grammar.com/conditionals.html

https://www.englisch-hilfen.de/en/exercises_list/if.htm

If clauses: rules and exercises

http://www.myenglishpages.com/site_php_files/grammar-lesson-conditionals.php#.VOr6DeaG-So

http://www.perfect-english-grammar.com/conditionals.html

http://www.ego4u.com/en/cram-up/grammar/conditional-sentences

http://www.ego4u.com/en/cram-up/tests/conditional-sentences-2

http://www.ego4u.com/en/business-english/grammar/conditional-sentences

http://www.learnenglishfeelgood.com/conditional-tenses-mixed1.html

http://www.learnenglishfeelgood.com/conditional-tenses-mixed3.html

https://englishwithatwist.com/2017/02/02/business-grammar-how-to-use-the-four-english-conditional-tenses-in-business/

adverbs of frequency and linking words

http://www.myenglishpages.com/site_php_files/grammar-exercise-adverbs-frequency.php#.Uzl1jKh_snY

http://www.englishexercises.org/makeagame/viewgame.asp?id=7330

http://www.flo-joe.co.uk/preliminaryenglish/grammar/adverbs-of-frequency.htm

http://www.eflworksheets.com/onlineexercises/beginners/grammar/linkers1.htm

http://www.esl-lounge.com/student/grammar/4g67-linking-words.php

http://www.learn-english-today.com/wordgames/hotpot-quizzes/linking-words1.html

http://www.flo-joe.co.uk/cpe/students/strategy/openclze/conj.htm

Corso BE 2 - lezione del 27 09 22 : How to

How to change Basic English into Business English

https://www.engvid.com/how-to-change-basic-english-into-business-english/

How to talk about your career

https://www.engvid.com/business-english-how-to-talk-about-your-career/

Talking about your profession in English

https://www.engvid.com/talking-about-your-profession-in-english/

50 English phrases and idioms to describe people in business

https://www.engvid.com/english-resource/50-english-phrases-idioms-to-describe-people-in-business/

How to discuss a topic in a group

https://www.engvid.com/how-to-discuss-a-topic-in-a-group/

How to make small talk at work

https://www.engvid.com/how-to-make-small-talk-at-work/

Business letters & emails exercises

https://learnenglish.britishcouncil.org/business-english/english-for-emails

http://www.businessenglishsite.com/modern-business-letters1.html

http://www.businessenglishsite.com/modern-business-letters2.html

http://www.businessenglishsite.com/modern-business-letters3.html

http://www.businessenglishsite.com/exercise_email1.html

http://www.learn-english-today.com/business-english/business-letters.html

http://www.learn-english-today.com/business-english/business-letters2.html