What is the verb phase in this sentence?

Have you ever written a letter to a secret pal?

to me i think class room sitting education is better. i do online school and i have not learned a think haha. when i sit in the classroom i just sit there and kind of pay attention but still i get so far ahead in the class when im doing online i have nothing else better to do but play video games and i sit in school and learn and have friends and just actually learn. when i'm doing online i sit here listing to music and get on and and look up the answers i guess that is my fault for being a cheater. but to be honest i think sitting in the classroom is better.

idkexplanation:

make sure you add the 455 plus 468 you can use a calculator to find the answer its 455 plus 458 of textbook