General:
* The new job is demanding, requiring long hours and a lot of travel.
* She's a demanding boss, but her employees respect her for it.
* The hike was demanding, with steep inclines and rocky terrain.
Specific to a person:
* My child is very demanding and wants everything done their way.
* The customer was incredibly demanding, complaining about the smallest details.
* He's a demanding partner, always expecting perfection.
Specific to a task:
* The construction project was demanding, requiring specialized skills and equipment.
* The training program was demanding, pushing the athletes to their physical limits.
* The final exam was incredibly demanding, with challenging questions that tested our knowledge thoroughly.
In a positive light:
* The demanding nature of the task forced me to develop new skills.
* Her demanding standards resulted in a flawless performance.
* His demanding personality led to a successful career.
Remember that "demanding" can have a negative or a positive connotation, depending on the context.