—Nowlotsofteenagersspendalotof

—Now lots of teenagers spend a lot of time playing computer games.
—Yes. Teachers and their parents should prevent them ____________ too much.

A．to play

B．play

C．plays

D．playing

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C．bad

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A．are told

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A．took away

B．took off

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—Sorry, I didn’t know.

A．may

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