. Some animals are in danger, and the scientists are doing ___ they can ___ them

题干

. Some animals are in danger, and the scientists are doing ___ they can ___ them.

A．that; to save

B．whatever; to save

C．what; save

D．the thing; save

上一题下一题 0.85难度单项选择更新时间:2010-06-30 06:12:34

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