This is a pair activity. Here's an example of how you and your partner might use the Key Expressions to talk about these things:
Student A: Are you interested in classical music?
Student B: Yes, I am. It's cool.
Student A: What are you into?
Student B: I'm into dancing. It's brilliant!
Student A: Are you into photography?
Student B: No, I'm not. It's boring.
Student A: I'm mad about computers.
Student B: Oh, really? They're great!
Student A: What about languages?
Student B: I'm interested in the film classes. Languages... hmm, I'm not very interested in languages. It's boring.
Answer: The answer is a dialogue demonstrating the use of Key Expressions for the given topics.