问题
选择题
单项选择。
—What's in the box? — [ ]
A. This is a pencil.
B. It is a pencil.
C. That is a pencil.
答案
答案：B
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单项选择。
—What's in the box? — [ ]
A. This is a pencil.
B. It is a pencil.
C. That is a pencil.
答案：B