I first met John at my sister’s wedding. He with the bridegroom at the time.A. was talkin

I first met John at my sister’s wedding. He with the bridegroom at the time.
A. was talking
B. talked
C. had talked
D. had been talking

(答案→)A. was talkingB. talkedC. had talkedD. had been talking解析：“at the time”是指“I first met John at my sister's wedding”的时候，提示“他当时正在……”，故用过去进行时。句意：我是在我妹妹的婚礼上第一次遇到约翰的。他当时正在和新郎交谈。

回答的不错