Exercise 4: Rewrite the following sentences with UNLESS > If Nếu không thì She will visit you if she isn't busy = Unless she is busy, she will visit you. If you don't study hard, you will fail the exam. -Unless you study hard, you will fail the Unless.... If)..not, Ví dụ: exam. 1. If she didn't have a car, she'd go to work by bus. 2. if you hadn't been too lazy, you'd have passed the exam. 3. If you don't study hard, you will get bad marks. 4. If he doesn't listen to me, he will feel sorry afterwards. 5. If the questions weren't too difficult, I would finish on time. **************