Q: Sentence (1) "The quality of mercy is not strained" -- Shakespeare.
Sentence (2) Security, stability, and efficiency are good qualities of an operating system.. Word: quality.
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A: the same meaning

Q: Sentence (1) I shall be writing to you soon.
Sentence (2) We liked to chat while we were eating.. Word: be.
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A: the same meaning

Q: Sentence (1) He enjoyed selling but he hated the travel.
Sentence (2) Space travel.. Word: travel.
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A:
the same meaning