Ex 1. Work hard or you’ ll fail the exam. If you …………………………………………………………………. 2. Hurry up or we’ll be late for school. If you …………………………………………………………………. 3. Don’t get up late or you will miss the first bus to Ha Noi. If you …………………………………………………………………. 4. Save water and you’ll have enough water to use in the future. If you ………………………………………………………………… 5. Don’t forget to do your homework and your teacher will be happy. If you ………………………………………………………………… 6. If she doesn’t have a key, she can’t go into the house. Unless ……………………………………………………………….. 7. He can’t look the word up because he doesn’t have a dictionary. If he ………………………………………………………………….. 8. I don’t have his phone number, so I don’t phone him. If I …………………………………………………………………… 9. I’m so busy, so I don’t write to my friends very regularly. If I …………………………………………………………………… 10. I can’t give you a ride because I don’t have a bike now. If I ……………………………………………………………………

1. Work hard or you’ ll fail the exam. 

If you don't work hard, you’ ll fail the exam.

2. Hurry up or we’ll be late for school. 

If you don't hurry up , we’ll be late for school.

3. Don’t get up late or yo·u will miss the first bus to Ha Noi. 

If you don’t get up late, you will miss the first bus to Ha Noi.

4. Save water and you’ll have enough water to use in the future. 

If you don't save water, you won't have enough water to use in the future.

5. Don’t forget to do your homework and your teacher will be happy 

If you don’t forget to do your homework, your teacher will be happy

6. If she doesn’t have a key, she can’t go into the house 

Unless she have a key, she can’t go into the house

7. He can’t look the word up because he doesn’t have a dictionary.

  If he have a dictionary, he ⇔can look the word up

8. I don’t have his ph·one number, so I don’t phone him.  

If I have his phone number,  I phone him

9. I’m so busy, so I don’t write to my friends very regularly. 

 If I don't busy, I write to my friends very regularly. 

10. I can’t give you a ride because I don’t have a bike now

. If  I have a bike now, I can give you a ride