[ Preposition & Gerund ]
Doctors say children can suffer_______playing video games.
A. at
B. for
C. from
D. in

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Subordinating Conjunctions › ViewLin can’t go swimming, because she forgot her bathing suit.
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an example
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Articles › View
Doctors say that we shouldn’t sit ………. for a long time.
A. in the sun
B. below sun
C. on sun
