[ Vocabulary ]
the careful use of a resource to prevent it from being wasted and make it last longer
A. efficiency
B. nutrient depletion
C. ozone
D. conservation
Select your answer:
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Other quiz:
Unless If First Conditional › ViewIf I _____ enough money, I ______ buy some new shoes.
A. had / will
B. have/ Would have
C. has / won´t
D. have / will
Grammar › View
She _____ English at the university.
A. teaches
B. is teaching
C. taught
D. was teaching
How to use : Read the question carefully, then select one of the answers button.