BIBLIOGRAPHY

https://es.educaplay.com/recursos-educativos/5009329-learning_english_grammar.html

https://www.perfect-english-grammar.com/first-conditional-exercise-1.html

https://www.youtube.com/watch?v=H25RnmslChI

https://www2.estrellamountain.edu/faculty/stonebrink/ESL040/Conditional%20Handouts%20p1&3%20ESL%20Library.pdf