---Please turn off the light.-OK Mom. I won’t leave the room the light . A. when; onB

问题补充：

---Please turn off the light.

---OK, Mom. I won’t leave the room the light .

A. when; on

B. with; on

C. with; off

D. when; off

答案：

A. when; on

(答案→)B. with; on

C. with; off

D. when; off

解析：根据题干可知，本句的意思是“开着灯，我不会离开的”，when是引导词，后面应该跟句子，故应该排除AD；“开”用on。所以本题选B。