问题
选择题
I know Mr. Shuili; we ______ to each other at an English lecture.
A．were introduced
B．are been introduced
C．are introduced
D．had been introduced
答案
答案：A
根据句意可知，我现在认识Mr. Shuili，我们应该是在过去被相互介绍的。因此使用一般过去式选A 。