Q: Jane knocked on Susan 's door but *she* did not answer.
Are "Jane" and "she" the same?
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A: no

Q: I used an old rag to clean the knife , and then I put *it* in the trash.
Are "the knife" and "it" the same?
=======
A: no

Q: It is not easy to space buttonholes exactly the same distance apart, and it is very difficult to cut them precisely the right size . The tiniest slip of the scissors will make the hole too large, and even one thread uncut will leave *it* too small.
Are "the scissors" and "it" the same?
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A:
no