A) Complete the sentences with CAN, COULD, BE ABLE TO. … E) Complete these sentences with MUST, MUSTN’T, NEEDN’T or HAVE TO. 1. … 19. shouldn’t.. Oct 31, 2017 But it raised a tantalizing question: How could the hunting, foraging Hadza possibly burn the same amount of energy as indolent Westerners?. Ejercicios de verbos modales…