The tutor（导师）asked his students to leave a wide when typing their essays.
A. border
B. column
C. surrounding
D. margin
网友回答
A. border
B. column
C. surrounding
D. margin
解析：
margin页边空白；border边界；column栏目；surrounding周围。故D为正确答案。句意：导师要求学生在打印他们的论文时页边空的地方留宽一点。