问题
选择题
—Is this ______ book?
—Yes, it's ______ English book.[ ]
A.a; a
B.a; an
C.art; an
答案
答案：B
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—Is this ______ book?
—Yes, it's ______ English book.[ ]
A.a; a
B.a; an
C.art; an
答案：B