Olive Garden Minestrone Soup

Name: Olive Garden Minestrone Soup
Ingredients: 4 cups vegetable stock; 2 cups water + more if needed; 2 cans diced tomatoes (14.5 oz); 1 can Italian green beans, drained (14.5 oz); 1 can kidney beans, drained (15 oz); 1 can white beans, drained (15 oz); 1 cup celery (diced); 1 cup carrots (diced); 1 small onion (diced); 1 cup zucchini (diced); 2 cups packed spinach; 2 tsp. dried parsley; 2 tsp. dried basil; 1/2 tsp. dried thyme; 2 bay leaves; 1 Tbsp. minced garlic; Salt & pepper to taste; 1 1/2 cup mini shell pasta; Fresh shredded Romano or Parmesan cheese (shredded (optional))