What does it mean to "qualify" in a football match?

Qualifying is a sports term. Refers to the competitive level beyond the boundaries of the original level, can enter a higher level of competition, stand out in the competition.

Make sentences:

1, Argentina National Men's Football Team 120 10 World Cup Group qualified and entered the final stage.

The fans were ecstatic when they heard that the China football team had qualified.

3. In the 20 14 World Cup, Italy hoped to draw at least with Uruguay in the group stage to qualify, but it backfired and lost the game when one person was sent off.