The blank space of the paper must be 1.5 inches at the top and 1 inch at the bottom and on the sides.14/20The blank space of the paper must be 1.5 inches at the top and 1 inch at the bottom and on the sides.framesbordersshuttersmarginsGiải thíchmargin = blank space: lề (sách, vở)Chọn đáp án D