Назовите антонимы, используя слова, данные ниже: a) to separate, disorder (chaos), to sell, to arrive, absense, unity, to establish, native, to protect, strong; b) order, to buy, to leave, presence, disunity, to break, strange, to attack, to unite, weak.

To separete-to unite
disorder-order
to sell-to buy
to arrive-to leave
absense-presence
unity-disunity
to establish-to break
native-strange
to protect-to attack
strong-weak