问题
选择题
It is really ____ useful dictionary, ____ dictionary every one of us needs.[ ]
A. an, a
B. a, the
C. the, a
D. a, a
答案
答案：D
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It is really ____ useful dictionary, ____ dictionary every one of us needs.[ ]
A. an, a
B. a, the
C. the, a
D. a, a
答案：D