The third sentence is incorrect. The first two sentences are grammatically correct, but they are not always used in the same situation. I am sorry for disturbing you.
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which one is correct from the below,
1) can i disturb you?
2) have i disturb you?
which one is correct and why, which one is wrong and why, if both are correct then which one is suitable for use, if both are wrong then what can i use.