4. We can help the experts keep animals and plants         . (endanger)

我們可以幫助專家讓植物和動物遠離瀕危處境。

4. from being/becoming endangered endanger是及物動詞,這里應該使用被動語態(tài)。

keep... from意為"使……遠離……"。

題目來源:高考英語組合訓練多項選擇+完成句子 > 組合訓練45-46

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