Q: Sentence (1) These stories don't check!
Sentence (2) Katie's sick, so I need to check up on her and see if she needs anything.. Word: check.
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A: different meanings

Q: Sentence (1) It is vital that he not know.
Sentence (2) I want to know who is winning the game!. Word: know.
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A: the same meaning

Q: Sentence (1) She didn't get his name when they met the first time.
Sentence (2) Her childish behavior really get to me.. Word: get.
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A:
different meanings