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A: Let’s         a poster about protecting the       .
B: Good       . Our mother Earth is sick. We        help her.
A: Let me       a circle first. It’s the Earth. It’s      , because there’s a lot of
on it.
B: Let me draw some        fish, because        makes the        dirty.
A: Let me draw two        and a        . Look, the Earth is crying.
B: Let’s         “ Who can        me?”on it.
A: OK. Our poster is        . It looks        .