Since entry into high school the students have been staying up late in the evening and getting up early in the morning.
A. admitted to
B. allergic to
C. accustomed to
D. attached to
网友回答
A. admitted to
B. allergic to
(答案→)C. accustomed to
D. attached to
解析：考查固定搭配。固定搭配：Be admitted to…被…录取；be allergic to对…过敏；be accustomed to…习惯于…；be attached to…附着于…；句意：自从上高中以来，学生们已经习惯于晚上熬夜，早晨早起了。根据句意说明C项正确。