The teachers never arrive late for work from Monday to Friday.
A. on weekends
B. on weekdays
C. every day
D. five times a week
网友回答
A. on weekends
(答案→)B. on weekdays
C. every day
D. five times a week
解析：on weekends在周末；on weekdays在工作日；every day每天；five times a week一周五次。句意：从周一到周五，老师们从来没有上班迟到。结合语境可知选B。