Final answer:
The Seabees took over a month to build the airstrip in Yo Do, Wonson.
Step-by-step explanation:
The Seabees were sent to Yo Do in the bay of Wonson to build an airstrip. The task was completed in over a month. The Japanese soldiers held the island of Iwo Jima against the American Marines for more than a month before it was lost. Therefore, it took the Seabees more than a month to build the airstrip.