问题补充：
Li Ming, don forget to turn off the lights before you leave the office, ?
A. won you
B. should he
C. shall we
D. will you
答案：
A. won you
B. should he
C. shall we
(答案→)D. will you
解析：句意：李明，离开办公室前别忘了关灯，好吗？逗号前面的是祈使句，因为是否定的祈使句，所以反意问句应该是will you？选D。
