Раскройте скобки, употребляя глаголы в требующейся форме.

If they ... to Paris last year, they would not have heard that famous musician.
If he ... \(to work\) hard, he would have achieved great progress.

I ... \(to write\) the composition long ago if you had not disturbed me.
If she ... me, I should have been in a very difficult situation.
If she ... \(to come\) to our house yesterday, she would have met her friend.