"Have you left?" is correct because left is used as a verb not an adjective.
left,wrong
a.s.
That is the correct spelling of "orphaned" (left without parents).
the hand opposite your dominant hand. For most people, that would be your left hand.
That is the correct spelling for both forms of "left" (past tense verb or the direction).
left,wrong
"I left New York for Texas" is grammatically correct.
The correct phrase is "you had to leave." "Leave" is the correct verb form to use after "had to."
Yes, it is correct to say "could have left." (eg.) He could have left at 5:30 instead of at 6:00. or She could have left me a note.
Correct.
a.s.
That is the correct spelling of "orphaned" (left without parents).
As in someone trying to remember where they left off, "Where was I?" is correct, yes.
straight left arm out of the driver seat
the hand opposite your dominant hand. For most people, that would be your left hand.
The correct punctuation for the question is: "He left the scene of the accident and tried to forget that it had happened?"
The phrase "had already left" is grammatically correct. The phrase "had already been gone" is not grammatically correct.