【題目】The WWF is working hard _________ the animals in danger.
A.save
B.to save
C.saves
D.saved

【答案】B
【解析】句意:世界自然基金會正努力工作來拯救處于危險(xiǎn)中的動物。此處表示目的,應(yīng)該用動詞不定式。故選B。

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