How to Use "rex" with Example Sentences

1. I like your name for great great grandpa rex : grandpa giant !
2. Thank you very much for your letter about great great grandpa rex .
3. You keep this photo and send me a photo of great great grandpa rex .
4. Fossil hunters have unearthed the remains of a man-sized forerunner to the colossal tyrannosaurus rex .
5. Following dr. rex 's camera study , he did a follow-up , asking patients if they would like a copy of their procedure video .