问题:
-What’s this?
-______.
[ ]
A. It’s pen
B. This is pen
C. It’s a pen
D. This is an pen
-What’s this?
-______.
B. This is pen
C. It’s a pen
D. This is an pen
-______.
[ ]
A. It’s pen B. This is pen
C. It’s a pen
D. This is an pen
参考答案: