You _______ (enjoy) the party if you _________ (go).
would have enjoyed / had gone
We wouldn't have crashed if...
If he'd scored the penalty...
...
If I _________ (know) how cold it was going to be in London, I _________ (take) warmer clothes.
had known/ would have taken
They wouldn’t have sat down if....
If you (be) quieter, the baby (not wake up).
had been / wouldn't have woken up
She would have finished the race if...
We __________ (not meet) if you ________ (not invite) us both to dinner that night.
wouldn't have met/ hadn't invited
I __________ (not open) the attachment if I ________ (know) that it had a virus.
wouldn't have opened / had known
We wouldn't have missed the film if ....
If I had taken an umbrella...