问题
选择题
This is ________ apple. It's ________ red apple.[ ]
A.a, a
B.a, an
C.an, a
D.an, an
答案
答案：C
搜题请搜索小程序“爱下问搜题”
This is ________ apple. It's ________ red apple.[ ]
A.a, a
B.a, an
C.an, a
D.an, an
答案：C