Sources for exercises
Present simple exercises.
http://www.perfect-english-grammar.com/present-simple-exercise-14.html
Present continuous exercises.
http://www.perfect-english-grammar.com/present-continuous-exercise-5.html
Past simple exercises.
http://www.perfect-english-grammar.com/past-simple-exercise-7.html
Past continuous exercises.
http://www.perfect-english-grammar.com/past-continuous-exercise-3.html
Mixed present simple and present continuous exercises.
http://www.perfect-english-grammar.com/present-simple-present-continuous-2.html
Mixed past simple and past continuous exercises.
http://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-2.html
Link video
Link feedback form
The link to the word searcher:
www.educaplay.com/learning-resources/15406962-myths.html
link to the wordweb
www.menti.com/alqbq9ccycj2