问题
选择题
I have ______ English book and ______ book is very useful. [ ]
A. a; the
B. an; the
C. an; a
D. a; an
答案
答案:B
I have ______ English book and ______ book is very useful. [ ]
A. a; the
B. an; the
C. an; a
D. a; an
答案:B