Task IV. What does/doesn't Sarah have to do today? 1. Call Mum. DONE 2. Collect cans and newspapers today. DONE 3. Take cans and newspapers to the recycling centre. 4. Apply to volunteer at the Eco-club. 5. Help clean local pond. DONE e.g. Sarah doesn't have to call her mum.

Task IV. What Sarah has/doesn't have to do today:

• Sarah has to take cans and newspapers to the recycling centre.
• Sarah has to apply to volunteer at the Eco-club.

Explanation: Items marked 'DONE' indicate tasks that Sarah has already completed. The remaining tasks are those she still needs to do today.