问题
选择题
—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
答案
答案：D
题目分析：句意：我们应该做我们能做的来拯救濒临灭绝的动物。是的，保护他们是我们的职责。To do表示目的，It is +adj.+to do.结合句意，故选D