The tacos are Mexican food. One taco consists of a folded/rolled tortilla. You fill the tortilla with ingredients: meat, cheese or sour cream, vegetables etc. You serve tacos with red or green salsa. There are endless variations of ingredient combinations. When eating a taco, no utensils are used ... tacos are eaten with your hands!
if its only a few sentences you want he is sending a letter to ms luis about his exchange program, his work at an animal shelter, and his improved spanish