Plants die if they ________ (not receive) enough water.
don't receive
I would travel to the moon if I __________ (inherit) three million dollars.
Inherited
If I had known you were ill, I _________ (visit) you.
would have visited
Your dog would have bitten me if he ___ (not be) on a leash.
had not been
She would have seen the whole show if she ______ (arrive) five minutes earlier.
had arrived
I would have called the police if ...
had + past participle
I would faint if ...
would + verb
I would have helped you if you _________ (let) me know about your problem.
had let
I would have cleaned the house if I ________ (have) enough time.
had had
If the movie weren't so boring, I ________ (not fall) asleep.
would not fall