40.He got to the classroom ___at 8o'clock ,but to his surprise,th_英语解答

40.He got to the classroom ___at 8o'clock ,but to his surprise,there was nobody in.
a at least b as usual c at first d as well
请翻译句子和选项
并加以说明原因

人气：422 ℃　时间：2020-03-17 07:25:20

解答

b as usual 和平时一样
他和平时一样8点进教室,但是令他吃惊的是,教室里没有人.