问题
选择题
-You were not in when I came over to your house.
-Oh, I ____________ for a friend from England at the airport.
A．was waiting
B．had waited
C．am waiting
D．have waited
答案
A
题目分析：句意：--我到你家的时候你不在。--哦，我在机场等我从英国来的朋友。根据句意：等待朋友是和你到我家同时发生的，用过去进行时，所以选A。