Q: Sir Clifford wants me to find him a new groom , about twenty or twenty-one, who knows his business. His old coachman is getting feeble, and he wants a man to work with him and get into *his* ways, who would be able, when the old man was pensioned off, to step into his place.
Are "new groom" and "his" the same?
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A: no

Q: The mothers of Arthur and Celeste have come to the town to fetch them. They are very happy to have *them* back, but they scold them just the same because they ran away.
Are "Arthur and Celeste" and "them" the same?
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A: yes

Q: The dog chased the cat , which ran up a tree. *It* waited at the bottom.
Are "the cat" and "It" the same?
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A:
no