问题
选择题
What disappointed us was that their determination finally ___.
A．gave off
B．gave out
C．gave up
D．gave in
答案
答案：B
短语辨析。 A.发光 B.发出；用完 C. 放弃 D. 屈服；让步。句意：让我们失望地是，最后他们的决心用完了。结合语境可知选B。
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