in my office

A few people are in the office today as most of my workmates went to the Guangzhou exhibition.
Qinfei is writting (writing) invitations, because her wedding will be holdheld next month.
Judy and Tang are talking about their newborn baby.
I search the internet and find nothing to do. My shcool(school) should be(have) started, but I don't need to go back to school now because I have no class this term.

Not bad! The meaning was conveyed, just be careful about spelling (school, writing) and articles (especially "the").