Q: Sentence (1) Hastened the period of time of his recovery.
Sentence (2) Picasso's blue period.. Word: period.
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A: the same meaning

Q: Sentence (1) Keep food for a week in the pantry.
Sentence (2) There's little to earn and many to keep.. Word: keep.
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A: different meanings

Q: Sentence (1) They retreated in the face of withering enemy fire.
Sentence (2) Hold your fire until you can see the whites of their eyes.. Word: fire.
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A:
the same meaning