[ a, an, the, Zero Article ]
He spent _________ most of his spare-time learning English.
A. A
B. An
C. The
D. Nothing

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Idioms › View“On time” means ___.
a. late
b. expected to be late
c. not late
Grammar › View
The ——– of water in Orlova Valley has dropped over the last two years.
A. consume
B. consumer
C. consumption
D. consumed