There is/ There are

https://agendaweb.org/grammar/there_is_are-exercises.html 

https://wordwall.net/es-ar/community/there-ir-there-are

Past tense

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

https://wordwall.net/es-mx/community/verbs-regular-practice

https://elt.oup.com/student/solutions/elementary/grammar/grammar_06_022e?srsltid=AfmBOorJyXp1wfF0ykarHmKJ8vKXskLx8z17W3TPFQ9uZfU97iE6En9I&cc=global&selLanguage=en