—Jane and July are here. Did I introduce them to you?—No you didn’t. I’ve seen them but we

问题补充：

—Jane and July are here. Did I introduce them to you?

—No，you didn’t. I’ve seen them，but we.

A. hadn’t been introduced

B. haven’t been introduced

C. weren’t introduced

D. didn’t introduce

答案：

A. hadn’t been introduced

(答案→)B. haven’t been introduced

C. weren’t introduced

D. didn’t introduce

解析：考查时态。句意：—Jane和July在这里，我有没有把他们介绍给你？—不，你没有。我看见他们了，但是我们没有被相互介绍。根据句意说明描述的是过去发生的事情对现在的影响，故使用现在进行时的被动语态。故B正确。