He es here on Mondays, Wednesdays and Fridays — , to be exact.
A. every second days
B. every other days
C. every other day
D. every two day
网友回答
A. every second days
B. every other days
(答案→)C. every other day
D. every two day
解析：考查词组：“每隔几天”可以用every+基数词+名词复数，或ever+序数词+名词单数，所以AD都是错的，“每隔一…”，是every+other+单数名词，句意：他星期一，星期三和星期五来，确切的说是每隔一天。选C。