1) Harry can't sing at all. If he could sing he would earn a lot of money, and I had a lot of fans.
2)Our team lost the match the other day. If we won, we could have gone abroad, to play for our country.
3)Thr dictation we wrote at the Russian lesson was very complicated. If it was a bit easier, we all would write it best and we would get very good marks.
4)If Stephen had warn us that the competition would be hard, we would prepare better.
5)If I hadn't left my textbook at home, I wouldn't get the bad mark.
6)If Lucy was enroled on the Spanish course, he could have learn Spanish best
7)If I hadn't fell aspeep in middle of the melodrama, I would know the end
8)If it hadn't rain all day through on Sunday, we would go for a walk
9)If the new dish wasn't so delicious, I wouldn't taste it
10)If the children had follow their teacher's advice, nobody would hurt