READING

https://agendaweb.org/reading/easy-reading.html

http://learnenglishteens.britishcouncil.org/skills/reading-skills-practice

https://learnenglishteens.britishcouncil.org/level/a1-cefr/term

There is/ there are

https://dictionary.cambridge.org/es/gramatica/gramatica-britanica/there-is-there-s-and-there-are
http://www.ejerciciodeingles.com/cuando-usar-there-is-there-are/
http://www.saberingles.com.ar/curso/lesson05/04.html
https://madridingles.net/como-usar-there-is-there-are/
https://www.englisch-hilfen.de/en/exercises/various/there_is_there_are.htm
https://agendaweb.org/grammar/there_is_are-exercises.html

WRITING/COMPOSITION

http://learnenglishteens.britishcouncil.org/skills/writing-skills-practice (CHOOSE A1)

LISTENING

CHOOSE A1 http://learnenglishteens.britishcouncil.org/skills/listening-skills-practice
https://learnenglish.britishcouncil.org/en/category/language-level/a1
https://www.examenglish.com/PTE/pte_general_level1_listening_part1.htm
CHOOSE A1  http://epapformacion.com/listening-niveles-a1-a2-b1-b2/
https://agendaweb.org/listening/comprehension-exercises.html

Verb to be

http://www.eclecticenglish.com/grammar/PresentSimpleToBe1A.html
http://www.agendaweb.org/exercises/verbs/to-be-forms
http://www.myenglishpages.com/site_php_files/grammar-exercise-be-present.php
https://www.englisch-hilfen.de/en/exercises/tenses/be3.htm

Past Simple

More than 35 exercises!

https://agendaweb.org/verbs/past_simple-exercises.html