问题
选择题
It is ____useful book. I borrowed it from ____school library. [ ]
A. an; a
B. a; an
C. a; the
D. an; the
答案
答案：C
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It is ____useful book. I borrowed it from ____school library. [ ]
A. an; a
B. a; an
C. a; the
D. an; the
答案：C