语法与词汇 Imagine a vast sheet of paper ______ straight Lines,Triangles, Squares, and Pentagons, instead of remaining fixed in their places, move freely about. . .

A、 on which
B、 in which
C、 whose
D、 which

【正确答案】 A

【答案解析】空格处应该填一个相当于where的介词词组。由于直线、三角等是在纸上移动，因此应该用介词on。