Expository and writing

Their/There/They're Demarrius plays football on Saturdays but this saturday _________ going to the Texas State fair.

There/ Their/ They're ___________ are two open shelves next to Clemarius in his room.

De'Shalya is writing a book to tell everyone why The Dr. Billy Earl Dade Middle School is better than Zumwalt. What is the purpose of her text?