Test your verb knowledge

http://englishteststore.net/index.php?option=com_content&view=article&id=4701&Itemid=417

https://www.englishpage.com/verbpage/verbs30finaltest.htm

More grammar...

Infinitives (with and without to) after verbs and adjectives
Gerunds (-ing form) after verbs and prepositions
Gerunds as subjects and objects

infinitive vs gerund
explanation and exercises
list of verbs followed by infinitive
list of verbs followed by gerund

Verbs

https://www.englisch-hilfen.de/en/grammar/tenses_table.pdf

Used to versus get/be used to

https://learnenglish.britishcouncil.org/en/quick-grammar/used-infinitive-and-beget-used

Lesson 1 (Refresh course)

Università di Venezia 
http://cladidattica.unive.it/login/index.php

Registrarsi come "Utenti non rientranti in altre categorie". 
Si riceve una mail con numero di matricola e password.
Entrare su "Practice area" e selezionare "B1 Mock Test - docenti scuola primaria". 
Ci sono vari contenuti tra cui una simulazione al computer.
Questo test è ripetibile.

Speaking test: Introduce yourself

An interesting site for computer assisted English learning

Indirect questions and miscellaneous

https://www.espressoenglish.net/direct-and-indirect-questions-in-english/

https://www.espressoenglish.net/difference-between-say-tell-and-speak/

http://www.talkenglish.com/lessondetails.aspx?ALID=2027

https://www.ecenglish.com/learnenglish/lessons/how-use-have-something-done/

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-79119.php

http://www.tinyteflteacher.co.uk/learning-english/grammar/gerund-infinitive-preposition.html

Causative: Have and get something done
http://www.perfect-english-grammar.com/causatives-have-get.html

Phrasal verbs