Fan after fan filed in for the big game, it wouldn't be long before what was filled?\nOptions:\n- sporting event\n- hockey game\n- soccer field\n- sports stadium\n- hot room
Step-by-step reasoning process below:

User
Person who is fan of sports goes to sports stadium to watch the match. Sports stadium is place where game is played so gets full with fans when there is big game. The answer: sports stadium.
Assistant