The correct form is "does he know." "Does he knows" is not correct. In English, when using the auxiliary verb "do" in questions or negative statements with third-person singular subjects (he, she, it), the main verb remains in its base form (infinitive form) without the "s" ending.

"Hit the button" is also sometimes used informally, especially in casual conversations, but "press the button" or "push the button" is more standard and commonly used in formal and everyday language.

Both "Is it possible" and "It is possible" are grammatically correct phrases, but they are used in different contexts. People use "is it possible" when asking a question about the feasibility or likelihood of something, and "it is possible" when stating a possibility or fact.

"Desperat" is an incorrect spelling. The correct spelling of the word is "desperate," not "desperat." "Desperate" is an adjective used to describe a strong feeling of hopelessness, urgency, or extreme need.

Both "gimnasio" and "gymnasium" are correct, but they are used in different languages. "Gimnasio" is the correct term in Spanish, and it means "gymnasium" or "gym" in English. So, if you are speaking or writing in Spanish, you would use "gimnasio."

The word "uniquer" is technically not incorrect, but it is not commonly used in standard English. The word "unique" is already a superlative, meaning it describes something that is one of a kind or singular, having no equal or equivalent.

"Liason" is an incorrect spelling. The correct spelling is "liaison." "Liaison" is a noun that refers to a connection, communication, or coordination between two or more parties or groups.

"Dieing" refers to the process of creating precise shapes or forms in metal or other materials using dies. "Dying" is a verb that describes the act of ceasing to live or exist.

"Occured" is an incorrect spelling of the word. The correct spelling is "occurred" with double "r." "Occurred" is a verb in the English language that means something has happened or taken place. It is often used to describe an event, incident, or situation that has happened in the past.