The one and only 4/5

During the 1 week holiday,i went to my paren's office to help them because my parent's job is a family
job.That's why any of our family member can go there and help.He can also hired some workers to help him.My father has a design company.He started a tibits business for my mum.She can hire some workers to go to the machine and top up the tibits.The office has two stories but my father uses only the first storey and left the second storey empty.
from:wei xin
index:32
class:2/4