have done 和 had done 和since的搭配
He met her yesterday.They _____each other since 1990
A,haven't met B hadn't met
我说说我的看法,应该选B,因为如果没有He met her yesterday.这句话的话,肯定就选A了,但是既然有这句话,那就是在过去,“没有相遇”就在昨天截止了,就应该用had done
我不是很确定,