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  • 1. Nowadays, we don't have enough resources to use. So it's everyone's duty to save them for the future. To save resources, we should ________________.

    ① throw away a pencil without completely using it

    ② collect waste things for recycling

    ③ go to school by bike instead of by car

    ④ turn off the tap while brushing our teeth

    ⑤ keep the lights on day and night

    A . ①②⑤ B . ②③④ C . ②④⑤

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