问题
选择题
This is ______ English book.______book is very useful (有用的) for your study.[ ]
A. an; A
B. an; The
C. a; A
答案
答案：B
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This is ______ English book.______book is very useful (有用的) for your study.[ ]
A. an; A
B. an; The
C. a; A
答案：B