The climbers succeeded in climbing to the top of the mountains, and they owed their success to the preparations they ______.
113. He, out of breath _____ himself along the street. Perhaps he was badly ill.
112. His mother was ill yesterday, so he had to _____ a doctor.
111. Morning exercises will ____ good to your health. You should keep early to bed and early to rise.
110. Take the orange and ____ it not in half, but into quarters.
109. When he saw the enemies, the soldier _____ the gun.