(1):limpiar
(2):nosotros
(3):los libros son chistosos
(4):563
(5):mi hermano
(6):mariscos
(7):la pierna
(8):un resfriado
(9):piscina
(10):el ropero
B is the correct answer. I just had a test on this type of questions
I believe the answer is dan, considering what all the other options mean.
