问题
选择题
John is ______ honest boy. He has ______ useful book. [ ]
A. an; an
B. a; a
C. a; an
D .an; a
答案
答案：D
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John is ______ honest boy. He has ______ useful book. [ ]
A. an; an
B. a; a
C. a; an
D .an; a
答案：D