Final answer:
Tacos on a combination plate are usually served with standard sides like rice and beans and can include a variety of toppings, but these can vary by restaurant.
Step-by-step explanation:
When placing an order for tacos on the combination plate at a restaurant, they are typically served with a variety of standard accompaniments, unless otherwise specified by the customer. These can include items such as rice, beans, and a small salad. The tacos themselves are often filled with a choice of protein (such as beef, chicken, or pork) and topped with lettuce, cheese, and possibly a salsa or other garnishes. It's important to note that the exact offerings can vary by restaurant, so if you have any specific preferences or dietary restrictions, it's best to specify them when placing your order.