Answer: its function in the sentence.
Explanation:
There´s a grammatical rule to determine the function of a pronoun in a sentence when used as part of a compound. Which pronoun to use will be established by its function in the sentence.
For example, in the Subject position, "he," "she," or "I" should be used. However, as the Object of a verb or preposition, "I" is replaced by "me," "he" is replaced by "him," and "she" is replaced by "her."
Refuse to answer , finish the interview and then report it to the next up boss
When the first act opens, Bernardo appears to relieve Francisco from duty, but it is so dark they both fearfully call out "who's there?" until they realize it's just guardsmen. We find out that the guardsmen have been spotting the ghost of King Hamlet.