Q: Sentence (1) Please focus on your studies and not on your hobbies.
Sentence (2) We focused on what to do.. Word: focus.
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A: the same meaning

Q: Sentence (1) After that day she never trusted him again.
Sentence (2) Those were the days.. Word: day.
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A: the same meaning

Q: Sentence (1) The defensive line braced to stop the run.
Sentence (2) The team enjoyed a brief run of victories.. Word: run.
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A:
different meanings