Form 6b. Past Simple

For practicing:
https://www.myenglishpages.com/site_php_files/grammar-exercise-simple-past.php;
http://www.focus.olsztyn.pl/en-past-simple-quiz.html#.W629KMu7rDc;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_mix.htm;
https://www.perfect-english-grammar.com/past-simple-exercise-7.html;
https://www.perfect-english-grammar.com/past-simple-exercise-8.html;
https://www.ecenglish.com/learnenglish/lessons/simple-past-tense-exercise.

Form 6a. Present Simple vs Present Continuous

 

For practicing:

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

https://elt.oup.com/student/solutions/preint/grammar/grammar_01_012e?cc=lt&selLanguage=en;

https://www.englishgrammar.org/simple-present-present-continuous-tense-exercise/;

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises;

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex02;

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex06;

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex08;

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex10.
GRAMMAR QUIZ:

https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive2.htm.

Future forms

https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-6874.php;
https://www.montsemorales.com/gramatica/Futurtenses.htm;
https://elt.oup.com/student/horizonscee/grammar/hr2g5a?cc=lt&selLanguage=en;
https://www.test-english.com/grammar-points/b1/future-forms/;
http://www.servator.cat/eva/index_files/Grammar/2ndcycle/4tESO/futures3.htm.

Forms 7a, 7c1, 7c2. Future forms

Simple Present is used to make statements about events at a time later than now, when the statements are based on present facts, and when these facts are something fixed like a time-table, schedule, calendar.
For practicing:
https://www.englisch-hilfen.de/en/exercises/tenses/going_to_future_mix.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/will_future_mix.htm;
https://www.ego4u.com/en/cram-up/grammar/present-progressive/use/exercises?use02;
https://www.ego4u.com/en/cram-up/grammar/simple-present/use/exercises?04;
https://www.englisch-hilfen.de/en/exercises/tenses/will_going_to_future.htm;
https://www.test-english.com/grammar-points/b1/future-forms/;
https://www.english-4u.de/en/tenses-exercises/future.htm;
https://www.ego4u.com/en/cram-up/grammar/future-mix/exercises;
https://www.perfect-english-grammar.com/present-simple-future-simple-exercise-1.html.

Form 8b. Present Perfect vs Present Perfect Continuous

For practicing:
https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro;
https://www.englisch-hilfen.de/en/exercises/tenses/present_perfect_or_progressive.htm;
https://www.perfect-english-grammar.com/present-perfect-present-perfect-continuous-1.html.
Quiz:
http://esl.fis.edu/grammar/multi/ppsppc.htm;
https://elt.oup.com/student/solutions/advanced/grammar/grammar_03_012e?cc=lt&selLanguage=en;
https://www.test-english.com/grammar-points/b1-b2/present-perfect-simple-continuous/.

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