How to Practice Your English Speaking?

In this video, Alisha answers 5 questions. - I understand english but iam can't speak . what's your advise to me how can i speaking - What is the difference between umpire and refree? Second, what is the difference between breath in, breath out and inhale, exhale? - How can we use thsoe words, "desirable, desired, preferable, preferred"? - Hello Alisha, what is the difference between: 1) I see a movie with Alisha tonight. 2) I’m seeing a movie with Alisha tonight. 3) I’m going to see a movie with Alisha tonight. 4) I’ll see a movie with Alisha tonight. - Can you give me simple explaination about word "Mighty"?