[ Vocabulary and Idioms ]
When there is a surplus electricity on the grid, these facilities use that power to pump water from the lower _______ to the higher one.
A. reservoir
B. lake
C. puddle
D. pond
Select your answer:
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Conjunctions › ViewChoose the correct conjunction to complete each sentence:
______ we were living in the same building, we never ran into each other.
A. Because of
B. Although
C. Neither
D. Either
Vocabulary › View
These new economic reforms have allowed for international ______________ and development in the country.
A. pay
B. renovation
C. investment
D. opportunity