1. Listen to the teacher carefully, or you won’t understand the lesson. -> If ……………………………………………………………………… -> Unless ………………………………………………………. 2. Unless she has a rest, she’ll have a headache. -> If …………………………………………………………………. 3. Hurry up or you will be late for school. -> If ………………………………………………………………. -> Unless ………………………………………………………… 4. If it doesn’t rain tomorrow, we will go camping. -> Unless ……………………………………………………….. 5. If he doesn’t learn hard, he will get bad marks. -> Unless ………………………………………………… 6. If the weather isn’t nice tomorrow, we won’t the trees. -> Unless ……………………………………… 7. Study harder, and you will get good marks. -> If …………………………………………… -> Unless ……………………………………. 8. Play sports regularly, and we will be healthy. -> If …………………………………………… -> Unless …………………………………….. giải đươc yêu lun^_^