Yesterday, when I went to his office, he online for some information. I think it will be an interesting lecture.
A. searched
B. was searching
C. would search
D. has searched
网友回答
A. searched
(答案→)B. was searching
C. would search
D. has searched
解析：本题考查时态。根据时间状语yesterday及句意“当我进入他办公室时”可知，用过去进行时。句意：昨天，当我进入他办公室的时候，他正在上网搜寻一些信息，我认为这将会是一个有趣的讲座。