[ Vocabulary ]
overpopulation, pollution, burning fossil fuels, & deforestation that have triggered climate change, soil erosion, poor air quality, & undrinkable water
A. energy conservation
B. human impact
C. sustainability
D. availability
E. natural resources
Select your answer:

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Grammar › ViewI _______ return the book after I read it.
A. will arrives
B. arrives
C. will going to arrives
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Perfect Verb Tenses › View
Identify the perfect tense in the following sentence: “By the time you arrive, I will have cleaned the house.”
A. Present Perfect
B. Past Perfect
C. Future Perfect
D. Simple Future
