问题
选择题
--- I didn’t see you at the party yesterday. Why?
--- Because I ________ for an important person from America at that time.
A．was waiting
B．is waiting
C．will wait
D．have waited
答案
答案：A
根据问句内容I didn’t see you at the party yesterday.说明问的是当时我做什么，应该用过去进行时，故选答案A