In large saucepan, heat olive oil over medium heat; saute leek, fennel, thyme, vegetables and 1/2 tsp salt for 5 minutes. Add green onions and broth. Cover; simmer 10-15 minutes. Add wild rice; simmer 5 minutes or until heated through. Add remaining salt, lemon juice and pepper. Ladle into bowls; top with cheese and garnish with minced fennel fronds.