Rewrite the following sentences
I.If you don't study harder, you 'll got bad marks.
→ Unless ..
2. Unless this man is a driver, he can't help you move by car.
3. If he doesn't practice writing every day, he can't improve his writing skill, = Uniess -
4. Unless you return this book to the library today, you'll have to pay a fine.
= IF.
5. Unless you go out more often, you might fall ill.
→ If.
6. If you are absent from school, you have to write a sick-note.
→ Unless
7. Unless the seas is warmer, the ice at the North and South pole will not melt.