If I were you I would apologize.
If he knew English he would speak it fluently.
If she gave me a book,he would read it.
If they were there,they would go sightseeing.
If they called me,I would know about the accident.
If she studied better,she would pass her exams.
If he had a lot of money,he would travel .
If she had a bike,she would ride it in the park.
If we went to the museum,we would see a lot of paintings there.
It it stopped raining,they would go for a walk.