1.-What time do classes usually _____ in the afternoon -At two o'clock.

问题描述:

1.-What time do classes usually _____ in the afternoon -At two o'clock.
A.begins B.over C.to begin D.begin

D
what time + 助动词 do + 主语 + 动词原形
而 B over 一般用:be over,如:Class is over.
不明白的再问哟,请及时采纳,多谢!