问题
选择题
---Is this ________ book?
---Yes, it's ________ English book.[ ]
A. a; a
B. an; an
C. an; a
D. a; an
答案
答案：D
搜题请搜索小程序“爱下问搜题”
---Is this ________ book?
---Yes, it's ________ English book.[ ]
A. a; a
B. an; an
C. an; a
D. a; an
答案：D