[ Grammar ]
The article ___ is used only before a vowel sounds.
A. an
B. a
C. the
D. of

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A. learn
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The boys ____ the window panes every week.
A. wiping
B. wipes
C. wipe
D. wiped
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A. disagree with somebody or a theory
B. give clear details about something
C. says indirectly that something is true
D. refers to briefly
Grammar › View
George Washington is an example of a/an:
A. common noun
B. proper noun
C. collective noun
D. abstract noun
