Creamy Mushroom Chicken

Creamy Mushroom Chicken (seashorebride)
(for a large oblong crock pot)

4-6 chicken breasts
1 package sliced fresh mushrooms
1 can cream of mushroom soup
1 can cream of celery soup
2 cans chicken broth (1 can for a thicker consistency)
1 cup chopped celery
1 cup couscous
2 teaspoon minced or powdered garlic1 tablespoon fresh or dry sage (optional)
Salt and pepper to taste

Place all ingredients (EXCEPT COUSCOUS) in crock pot and cook on low 6-8 hours. During the last hour add the couscous.