—Weshoulddowhatwecantheendange-优题课

题文

—We should do what we can ________ the endangered animals.
—Yes, it’s our duty_________ them.

A．save; to protect	B．save; protect
C．to save; protect	D．to save; to protect

科目英语题型单选题难度中等

知识点：谓语

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