I know Mr. Shuili; we to each other at an English lecture.A. were introducedB. are been i

问题补充：

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. were introduced

B. are been introduced

C. are introduced

D. had been introduced

解析：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 。