Never Confuse SAY, SPEAK, and TELL Again! English Grammar

In this video, Alisha answers 5 questions. - Can I know what the difference between Just, Already, Still and Yet? - How are you gettin' on? I'd like to know what does 'it isn't that good' mean. - What is the difference between "decline" and "reject" please? - Some words end with -ed like respected, based, affiliated, and closed. What is the use of these words ? Do we use these for past tense? - My question is what is difference between say, ask, and speak