Teenagers under 19 years old _______ to visit this website according to the rules last year.

A. weren’t allowed B. weren’t allowing

C. won’t be allowed D. haven’t been allowed

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My parents often prevent me ________ computer games on school days.

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Is it true ?

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4.The main purpose of this article is to _____ .

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B. tell people how to protect their eyes

C. tell people to have more carrots

D. tell people something more about their eyes

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