单项填空
1. I remember having met him at a friend’s wedding, but we __________ then.
A. were not introduced
B. did not introduce
C. haven’t introduced
D. hadn’t been introduced
【解析】 “当时没有互相介绍”，应用一般过去时态的被动形式。
【答案】 A
2. I wanted two tickets, but there were __________ left.
A. neither B. none
C. either D. no
【解析】 none相当于not any tickets。
【答案】 B
