[ TOEIC ]
Sustainable ______ is the key indicator of the long-term health of the economy.
A. produce
B. to produce
C. productive
D. productivity
Select your answer:
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Adverbial Clause › View_____ you finish your work, you can go home.
A. When
B. So that
C. Since
D. If
Vocabulary › View
The idea is _____ by a lot of research.
A. developed
B. supported
C. authorized
D. admired