Answer:
Kate had thought everyone had forgotten her birthday, even her parents. When she woke up there was no one at home, so she assumed her parents left early for work and got ready and went to school. At school none of her friends wished her happy birthday, not even her teacher.
On her way home that evening after Soccer practice, Kate unlocked her door and heard cheers coming from the inside as she opened the door. As Kate stepped into the room and everyone immediately began to cheer, she knew this was teh greatest feeling she would ever experience. Her friends and family, all in one place here to celebrate her birthday. :)
Step-by-step explanation: