[ Vocabulary ]
the ability to be maintained at a certain rate or level
A. energy conservation
B. human impact
C. renewable resources
D. sustainability
E. availability
Select your answer:
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Grammar › ViewOur products _____ for safety regularly before they leave the factory. Our products _____ for safety regularly before they leave the factory.
A. Has been checked
B. Is checked
C. Are checking
D. Are checked
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Ido is very _____________ and always says please and thank you.
A. plot
B. in order to
C. punch line
D. turn into
E. polite