Watching the online open courses of some famous European and American universities a new fashion among white collars in China over the past few months.
A. became
B. had bee
C. has bee
D. bees
网友回答
A. became
B. had bee
(答案→)C. has bee
D. bees
解析：本题考查时态。根据句中时间状语over the past few months在过去的几个月，故用现在完成时态。所以选择C项。