Withmoreandmorebirds,somedayso-优题课

题文

With more and more birds _______, some day some species will _______ completely. In addition, some of them have _______ environmental pollution.

A．dying off; die out; died from

B．dying away; die off; died from

C．dying down; die out ; died of

D．dying out; die away; died of

科目英语题型单选题难度中等

知识点：一般将来时的被动语态完成对话谓语

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