If he ___ your present, he would have changed it.
hasn't liked
didn't like
doesn't like
hadn't liked
If I ___my essay before I gave it to the teacher, I would have been able to correct the errors.
checked
have checked
did checked
had checked
If Harry ___ to bed late last night, he wouldn't have felt tired all day.
had gone
hadn't gone
didn't go
hasn't gone
If Ms Davis hadn't had a bad cold, she ___ to the concert.
would have go
would have gone
could go
would go
