What was wrong with the first roof?

Acceptable Answer(s)-Blank Space 1

it did not slope, it was not sloped!, it was flat,, they forgot to slope it, it was not slanted., the water stayed on it!, it was not slanted,, it was flat., they did not slope it!, it was not sloped., it was not sloped,, the water stayed on it,, it did not slope., it was flat, the water stayed on it., it was not slanted!, it did not slope,, there was no slope, they did not slope it., it did not slope!, it was too flat., it had no slope., it was too flat,, they forgot to slope it!, they forgot to slope it., it had no slope,, they forgot to slope it,, it was too flat!, it was too flat, they did not slope it,, there was no slope!, it had no slope, it was not sloped, they did not slope it, it had no slope!, it was flat!, the water stayed on it, it was not slanted, there was no slope., there was no slope,