1. If she had a car, she will go out in the evening.
2. If Sarah didn't hate school, she would study hard.
3. If you don't leave immediately, I will call a policeman.
4. If I knew her number, I will ring her up.
5. If she weren't often absent from class, she could keep pace with her classmates.
(câu này một số sách sẽ dùng tobe=was, nhưng mình theo sách cũ là quá khứ bàng thái tobe=were nha)
6. If I knew her adress, I could write to Alice.
7. If I knew the answer, I could tell you.
8. If we had had a map, we would not have got lost.
9. If his friend had not been so late, they would not miss the first train.
10. If today were Sunday, the pupils could go swimming.