In the conversation (Section F), Simon says, 'Yes, I do. I'm quite ____________ about fitness.' Given the context of exercising every day, 'serious' or 'careful' would fit. 'Serious' is the most appropriate word to fit the blank in the context of being 'quite...about fitness' and exercising regularly, implying commitment.
Class 6 › English › Chapter 9: Health is Wealth › Topic: Listening and practicing conversations about fitness
Aligned to the NCTB national curriculum.