[ Adverb Clauses ]
The frazzled student, who studied for a test, stayed up all night.
A. when studying for a test, stayed up
B. The frazzled student
C. stayed up all night
D. who studied for a test

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Grammar › ViewIssac Newton came up with his theory of gravity when an apple suddenly fell on his head and dropped ____________ the ground.
A. below
B. onto
C. above
D. upon
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My dog doesn’t like … moon.
A. a
B. the