Dont too late or youll be tired during daytime.A. get up B. set up C. stay up D. show u

问题补充：

Don too late, or youll be tired during daytime.

A. get up

B. set up

C. stay up

D. show up

答案：

A. get up

B. set up

(答案→)C. stay up

D. show up

解析：考查词语辨析。Get up“起床”；set up“竖立;建造；建立,创立”；stay up“熬夜”；show up“揭露;暴露 ；出席;露面”由后半部分句意“否则白天你将太疲劳”可知不要熬夜太晚。故选C。