No, the correct phrasing would be "Where was I?" to form a complete and grammatically correct question.
The phrase "had already left" is grammatically correct. The phrase "had already been gone" is not grammatically correct.
No, the correct form is "Why did you leave?" using the past tense of the verb "leave."
No, the sentence should be: "The police caught the thief because he left a clue." This version is grammatically correct because it includes the article "a" before "clue," making it a complete sentence.
No. It should be: They let him go from his job.
Yes, "could have left" is grammatically correct. It is a modal verb construction used to talk about a past possibility or ability to leave but did not necessarily happen.
I think that this is a riddle; that this is too easy; that something must have been left out of the question; that I should not even bother; that the author of the question doesn't know how easy it is; thatthis answer is grammatically correctly; that this answer is done.
It has no main clause.
left,wrong
"Have you left?" is correct because left is used as a verb not an adjective.
Eisenhower did not represent any particular state. He was never in Congress. After WW II he was elected president in 1952 and served two terms. Dwight D. Eisenhower was a resident of the State of New York when he was elected U.S. President in 1952.
I prefer "be part of the team", although they may be about the same. The reason for my preference is that the little word "a" is one of the "indefinite articles". Also, "become" is future; "be" is present. They are very small points, but to my ear "I want to be part of the team" sounds more settled and focused than "I want to become a part of the team".