GRAMMAR

PAST CONTINOUS AND SIMPLE PAST

https://learnenglish.britishcouncil.org/es/quick-grammar/past-continuous-and-past-simple

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro

PAST CONTINOUS

Past continous use

http://www.ef.com.co/recursos-aprender-ingles/gramatica-inglesa/past-continuous/

SIMPLE PAST

Simple past use

https://www.englishpage.com/verbpage/simplepast.html

4 formulas for the English questions

Yes/no question with verb to be. To be + subject + object. Are you happy?	Yes/no question with verb different to be. Auxiliary + subject + verb + object. Do you speak English?
Information question with verb to be. Wh + to be + subject + object. How are you today?	Inform.  question with verb different to be. Wh + auxiliary + subject + verb + object. How do you do on Sundays?

How to ask and answer questionshttp://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-1/session- 2/activity-2

COMPARATIVES AND SUPERLATIVES

1. Exercises using comparatives and superlatives

http://www.agendaweb.org/grammar/comparative-superlative-exercises.html