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