The phrase "a glass of" is typically followed by a liquid or a substance that can be contained in a glass. Among the options provided, "soup", "chocolate", and "soda" are all commonly consumed from a glass or container. However, "soup" and "soda" are the most direct and common pairings with "a glass of". "Chocolate" can be in liquid form (hot chocolate) or solid form, making "a glass of chocolate" less common than "a glass of soup" or "a glass of soda". Considering typical usage, "soup" and "soda" are the most appropriate answers.