问题
选择题
—You were out when I dropped in at your house yesterday.
—Oh, I________ for a friend from Beijing at the railway station.
A.was waiting
B.had waited
C.am waiting
D.have waited
答案
答案:A
根据上句中的时间状语的提示可知谓语动词是指过去某时正在发生的事情,因此用过去进行时态,故答案为 A。