Question

My father knows Kate's father. They ____ to each other at a conference. （　　）

A.hadbeenintroduced
B.areintroduced
C.wereintroduced
D.havebeenintroduced

Answer 1

【答案】：C
句意为“我爸爸认识凯特的爸爸，他们是在一次会议上经介绍认识的。”