There was a beautiful planet called Kepler. On it lived a group of people. They all felt scared at night becausethere were zombies    36    underground. When the sun went down, the zombies came up to hunt people for food.The king of the country    37    his soldiers to attack the zombies, but they could not kill the zombies at all. In theend, the king and his people gave up    38   back. Everyone just hid before it got dark, and no one could sleepwell. However, Natalie, the smartest princess in the country, found out a way to kill the zombies quickly. She turnedto nature for help and let out the pollen into the air from a mountain on a windy night. Because the zombies were    39    the pollen, they all died    40    they smelled and breathed in the pollen. 

【題組】36.
(A) to live
(B) living
(C) lives
(D) lived