We got lost because we didn't have a map. His friends were so late, so they missed the rain. Today isn't Sunday, so the pupils can't go swimming. Ellen didn't have much money in the bank, so she was very worried

1)We got lost because we didn't have a map
=> Unless
2)His friends were so late,so they missed the rain
=> Unless
3)Today isn't Sunday, so the pupils can't go swimming
=> If
4)Ellen didn't have much money in the bank, so she was very worried
=> If
5)Unless Tom stops talking, he won't understand the lesson
=>If
6)She didn't go to yesterday, so she can't do this exercise today
=> If
7)If i had known she was sick, Iwould have visited her
=>Had
8)If the train should be delayed, Ishall send the telegram
=> Should
9)If I met the author one day, I would ask him to sign my copy of his new book
=> Were I
10) I didn't realized he was the author and that's why I so rude about his book
=> Had I realized
11)Hurry up or we will be late for the last bus
=> If
12) If was very cold yesterday , so couldn't go swimming
=> If