问题
选择题
| —Colin, what's this in English? —_______. |
A. This is a pen B. It's a pen C. It's pen D. It's an pen |
答案
答案：B
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| —Colin, what's this in English? —_______. |
A. This is a pen B. It's a pen C. It's pen D. It's an pen |
答案：B