11 Fill in: in, for, to, of. Healthy Snacking We all love to eat snacks but we should make sure that we choose snacks that are low 1)............. fat, sugar and salt, high 2) protein and full 3)...............fibre so that they are good 4).............. us. We should also pay attention 5)..... portion sizes and not eat too many snacks, especially before a meal.​