We don’t have any classes _____ this afternoon.A.in B.at Con .D./如何填空?
问题描述：
We don’t have any classes _____ this afternoon.A.in B.at Con .D./如何填空?
答
选D
morning/afternoon/evening这些词前面的介词都用in,但是如果前面有this/that这些指示代词时,则不能加in.