sustantivos contables / no contables

subraya la respuesta mas apropiada:
EJEMPLO:Bread is made from flour / flours.

1.Ineed to buy three pizza / pizzas
2.Do you want water/waters with your meal.
3.Gilbert is making soup/soups
4.Youare making sandwich/sandwiches for 20 people.
5.Silvia always eats tomato/tomatoes with her dinner.
6.We are tired of this food/foods
7.I'll have two baked potato/potatoes please
8.Where are the cake mix/cake mixies.
9.Good nutrition /nutritions is important
10.There are six food group/groups in the nutrition pyramid