Listen and check (✓) a or b. There is one example.

1. a. Yes, we did. We saw lots of old paintings.

    b. You mustn't take photos in the museum.

2. a. I bought some great postcards.

    b. There weren't any models.

3. a. I'm not sure.

    b. It's a very large cave.

4. a. I'm playing volleyball.

    b. No, you mustn't play on the grass.

5. a. My is running fast.

    b. I think My is faster.