If I had enough money, I would go with them.
If you go out with your friends tonight, I will watch the football match on TV.
If he tried harder, he would reached his goals.
I would buy these shoes if they fitted.
It wouldn't surprise me if he didn’t know the answer.
If we had listened to the radio, we would have heard the news.
She would have come to our party if she had not been on holiday.
If I hadn't studied, I wouldn't have passed the exam then.
If he works on Friday, he won’t be able to come with us.
We will be late for the train unless we get a taxi.
P.S. Некоторые предложения изначально содержали ошибки, например, во втором с "tonight" не может быть глагол в Past Simple "went", потому исправляла по смыслу не только ту часть, где пропуски, но и условие также.