"Time to get ready for Uncle Mike's birthday party, Jimbo" Mom said. "But Mom, I need to work on my science fair project," Jim looked up from a table filled with wires, glue, and pleces of wood.
"Jim, you've known that it's Uncle Mike's birthday celebration for over a month. It was you who helped plan it!" The wrinkle between his
mother's eyes deepened.
"I know, but my science fair project is due tomorrow!" Jim said.
"Oh Jimbo," his mother sighed, "why do you always wait until the eleventh hour?"
Which does the phrase "the eleventh hour" mean in the passage?