What have you been doing

Students have a card of something they have been doing and the result of it.
One student reads a sentence with a result, for example, “I’m tired!”.
Another student tries to guess why this has happened and what the student has been doing previously. Using the Present Perfect Continuous the first student asks the questions, for example, “Have you been walking in the forest?”.

Students have 5-6 tries to get the correct answer. After five or six tries, the student who has the card tells what they have been doing previously.