They are so diligent in their study that they ______ their sleep.

A、HYPERLI
B、"https://mooc1-1.chaoxing.com/work/javascript:void(0)"
C、HYPERLI
D、"https://mooc1-1.chaoxing.com/work/javascript:void(0)"
E、HYPERLI
F、"https://mooc1-1.chaoxing.com/work/javascript:void(0)"
G:HYPERLI
H:"https://mooc1-1.chaoxing.com/work/javascript:void(0)"