Detroit Lions star wide receiver Amon-Ra St. Brown and running back David Montgomery are active for Thursday afternoon’s game against the visiting Chicago Bears.St. Brown (knee) and Montgomery (shoulder) were both listed as questionable to play for the Lions (10-1), who have won nine games in a row.St. Brown leads the team in catches (71), receiving yards (747) and receiving touchdowns (nine), while Montgomery has rushed for a club-best 11 TDs to go along with 632 rushing yards.While Detroit will have those two key cogs in its lineup, it will be without several others.