In the excerpt you can see how the protagonist struggles to fulfill the orders of the Sheikh. He calls out to "Mohammed" and desperately yells, "I can do no more; I am done!"
From this we can conclude that during this moment he was very Desperate
aggressive, determined, earnest, energetic, enthusiastic, resourceful, anxious, ardent, aspiring, avid, ball of fire, bent upon, climbing... you get it...
