问题
选择题
单项选择。
—Is this a teacher's office? —Yes, .[ ]
A. He is
B. it is
C. she is
D. I am
答案
答案：B
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单项选择。
—Is this a teacher's office? —Yes, .[ ]
A. He is
B. it is
C. she is
D. I am
答案：B
面中龋，损及