Table: argentina_1985_primera_division
Columns: home_1st_leg
home_2nd_leg
1st_leg
2nd_leg
aggregate

Question: What was the score of the 2nd leg when the Belgrano played the first leg at home with a score of 2-1?
SQL: SELECT "2nd_leg" FROM argentina_1985_primera_division WHERE "1st_leg" = '2-1' AND "home_1st_leg" = 'belgrano'

Question: What was the aggregate score that had a 1-2 second leg score?
SQL: SELECT "aggregate" FROM argentina_1985_primera_division WHERE "2nd_leg" = '1-2'

Question: Which team played their first leg at home with an aggregate score of 3-4?
SQL: SELECT "home_1st_leg" FROM argentina_1985_primera_division WHERE "aggregate" = '3-4'

Question: Which team played the 2nd leg at home with a tie of 1-1 and scored 3-2 in aggregate?
SQL: SELECT "home_2nd_leg" FROM argentina_1985_primera_division WHERE "aggregate" = '3-2' AND "2nd_leg" = '1-1'

Question: Who played at home for the 2nd leg with a score of 1-2?
SQL: SELECT "home_2nd_leg" FROM argentina_1985_primera_division WHERE "2nd_leg" = '1-2'

Question: Who played at home for the second leg with a score of 0-1 and tied 0-0 in the first leg?
SQL: SELECT "home_2nd_leg" FROM argentina_1985_primera_division WHERE "1st_leg" = '0-0' AND "2nd_leg" = '0-1'