[ Linking Verb ]
………energy sources like coal and oil contribute to environmental pollution.
A. Computer-controlled
B. Eco-friendly
C. Renewable
D. Non-renewable
Select your answer:
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TOEFL › View
______________provided a living for nearly 90 percent of the population of the American colonies.
A. Farming was what
B. What farming
C. Farming was
D. What was farming