. Some animals are in danger, and the scientists are doing ___ they can ___ them.
A．that; to saveB．whatever; to saveC．what; saveD．the thing; save
B
考查名詞性從句及目的狀語(yǔ)從句。句中whatever引導(dǎo)賓語(yǔ)從句，在從句中作賓語(yǔ)；不定式to save them.表示目的性。句意：一些動(dòng)物處于危險(xiǎn)中，科學(xué)家盡他們所能拯救他們。
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