问题
选择题
Everyone was out of _____ breath after they ran for so long _____ time.
A．不填; 不填
B．不填; the
C．a; the
D．不填; a
答案
答案：D
题目分析：句意：跑了这么久，每一个人都上气不接下气。Out of breath是固定用法，意思是上气不接下气；so long a time是固定用法，意思是这么久，选D。
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