I would have helped you if you had asked. - 
He would be sad if he knew that. - 
I would have arrived yesterday if my bus had not been late. - 
I will go to Newcastle if there is a direct train. - 
He will buy a new phone if his father lends him money. - 
We would have moved to another city if we had sold our flat. - 
If it rains, they will cancel the match. - 
If I had listened to you, I would not have made this mistake. - 
If I were stronger, I could do boxing. - 
Mary will send me a postcard if she goes to Thailand. - 
If he is cold, she will close the window. - 
If I had bought that dress, I would have gone to the party. - 
She would have gone to the dancing class if she hadn't broken her leg. - 
If she had more time, she would learn karate. - 
She would have won the contest if she hadn't fallen down. - 
I would go to Frank Sinatra's concert if he was still alive. - 
He will answer you if he has free time. - 
If the plane had not arrived late, we would not have missed the train. - 
I would have bought that dress if it had been on sale. - 
If she played the piano, she would take part in the concert. -