问题补充:
----Why do you always sleep ?
----Because I’m afraid of the dark.
A. by yourself
B. with the door open
C. with the window open
D. with the light on
答案:
A. by yourself
B. with the door open
C. with the window open
(答案→)D. with the light on
解析:由答语:因为我害怕黑暗,可推知前句为:你为什么总是让灯开着睡觉?故选D。