Introduce scene: Mystery at the Vet Clinic Present a picture of a messy vet clinic (e.g., knocked-over medicine, missing dog). Ask: “What do you think happened here?” Provide clue cards (e.g., “The assistant was cleaning the cages,” “The door was open when...").

- First, divide Ss into three groups for Group Presentation: Each group presents their version of the clinic mystery using the past continuous and past simple. - Next, Ss engage in Pair Work for Detective Interviews: One student is a detective, another is a witness. They role-play a police interview: Detective: “What were you doing when the dog escaped?” Witness: “I was filling out a medical report when I heard a noise.” T tends to any questions pairs may have.

- Discuss: Which clues were the most helpful? - Highlight main uses of both past tenses in the story & solve any doubts from Ss.