Oy . It 's been a long week :P I ' ve been working my tail off and trying to keep everything running smoothly around here . It 's not easy and it 's an endless task , but I just keep thinking ONLY A FEW MONTHS until my mom takes the kids to Illinois for FOUR WEEKS ! WOOHOO !

Select from: (I). They are going to get a promotion .. (II). They are going to get a raise .. (III). They are going to quit their job .. (IV). They are looking at a vacation soon ..
Answer the following question: Why is the narrator staying positive amid a heavy workload ?
(IV).