I didn't know a____/a____ at the party.快答快答

I didn't know a____/a____ at the party.快答快答
I didn't know a____/a____ at the party.快答快答

I didn't know a____/a____ at the party.快答快答
anything/anyone

楼上的，什么人不认识能被邀请参加party?

I didn't know anyone____/anybody____ at the party.