Answer:
1 - True
2 - False
3 - False
4 - False
5 - False
Step-by-step explanation:
Two countries can gain from the trade if one has comparative advantage in a certain good and other has comparative advantage in other good. The trade will always occur when both parties involved in the trade benefits from it. It is not necessary that if a country has comparative advantage in certain good then it will have comparative disadvantage in other good.