单项选择题

Goods that are returned ______ warranty should be accompanied by proof of purchase.

A. with
B. under
C. over
D. on
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单项选择题
Health care workers should always explain the ______ effects of physical exercise to their patients.
A. benefiting
B. benefits
C. beneficiary
D. beneficial
单项选择题
With more than 200,000 domestic accidents every year, household safety is not something that should be taken for ______.
A. granted
B. accepted
C. agreed
D. given
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