1, Unless the rain had been heavy, we wouldn't have come to the class late.
2, Unless she had felt so tired, she could have gone to the cinema with us.
3, Unless I had got the map of this city, I would have lost the way to come back to the hotel.
4, Unless my father had gone to work yesterday, he would have known what happened to me.
5, Unless the teacher's question had been so difficult, I could have answered.
6, Unless he had started earlier, he would have missed the first bus.
7, Unless she had learned hard, she would have failed the final exam.
8, Unless you stop immediately, I will call your father.
9, Unless I had known Alice's telephone number, I couldn't have phoned her.
10, Unless I know your decision, I can't tell them.
12, Unless the weather is so hot, we can go out.
13, Unless she had come late, she could have met him.
14, Unless he had gone out in the rain last night, he wouldn't have had the flu.
15 Unless he smokes, he won't be so weak.
16, Unless I had been busy, I would have watched TV last night.
17, Unless you stop talking, you won't finish work on time.
#LemonXTree