Video - Optional & required relative pronouns

Online grammar resources for teachers and students; Unit 7 "Changin times" - Optional and required relative pronouns; Page 55. - Passages 2 by Jack C. Richards and Chuck Sandy. Instagram 👉 [ @abcenglish.tv ] 👉 https://www.instagram.com/abcenglish.tv/ Follow your teacher on IG: 👉 https://www.instagram.com/iam.mariodiaz/