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