北美洲是加拿大、美国和墨西哥所在的大陆。

___North America is the continent where Canada, the US, and Mexico are located.

北美自由贸易协定促进了该地区国家间的经济合作。

The free trade agreement has boosted economic cooperation among countries in ___North America.

加拿大和美国都位于北美洲。

Both Canada and the United States are located in ___North America.