late in the morning Bob turned off the alarm.A. To sleepB. SleepingC. SleepD. Having slept

问题补充：

late in the morning,Bob turned off the alarm.

A. To sleep

B. Sleeping

C. Sleep

D. Having slept

答案：

(答案→)A. To sleep

B. Sleeping

C. Sleep

D. Having slept

解析：to sleep 前省去了in order,表目的。