Решение:
- old (man) - young (man)
- short (hair) - long (hair)
- right (hand) - left (hand)
- cheap (hotel) - expensive (hotel)
- poor (people) - rich (people)
- difficult (task) - easy (task)
- curly (hair) - straight (hair)
Ответ: young; long; left; expensive; rich; easy; straight.