问题
选择题
"What's this? "
_____. "[ ]
A. It's pen
B. This is pen
C. It's a pen
D. This is an pen
答案
答案：C
搜题请搜索小程序“爱下问搜题”
"What's this? "
_____. "[ ]
A. It's pen
B. This is pen
C. It's a pen
D. This is an pen
答案：C