3.Unless she booked them soon, she would find tickets for the concert
4.Unless I was too tired ,we wouldn't go to cinema tonight
5.If you used a strong nail, the mirror wouldn't fall
6.If it rained, we wouldn't go to the footbal match
7.Unless their relatives had a spare room, they wouldn't stay in a hotel
8.If you reminded me, I wouldn't forget to post the letter
9.Unless you started now, you wwould finish on time
10.If you read the instructions, you would know what to do