What were they doing?They did not remember合为一句They didn't remember what they —— ——

What were they doing?They did not remember合为一句
They didn't remember what they —— ——

拼起来就是：they didn’t remenber what were they doing
怎么想都觉得时态不对啊进行时怎么可能跟remember搭配,难道：那时候,他们忘了自己正在干什么吗.这太文学了,应该是
they didn‘t remember what they had done吧
他们记不起自己做了什么才合理吧