- 1. They
don't have to make a fire, the guide will do that.
- 2. She doesn't have to go on safari, only if she wants to.
+ 3. You have to find or build a shelter before dark.
- 4. Mandy doesn't have to read the instructions.
- 5. You don't have to find your steps.
+ 6. They have to travel only during daylight.
+ 7. She has to find food.