Question

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 become

C．has become

D．becomes

Answer 1

C

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。