Exercise 1 Give a short negative answer using neither or either: Example

Exercise 17 Fill in the gaps with modal verbs must, can (could), may, have to in affirmative and negative forms:

1. 
   The doctor said, “The child is very ill. You must take him to the hospital now.”
   
2. 
   There were no buses or taxis, so we had to go on foot.
   
3. 
   Everybody must learn a foreign language.
   
4. 
   We can't live without food and water. We have to eat and drink.
   
5. 
   I have to get up early tomorrow, so I mustn't go to bed late tonight.
   
6. 
   You mustn't drive a car at night without lights.
   
7. 
   Tom’s father told him that he mustn't ask these questions.
   
8. 
   Man cannot live by bread alone.
   
9. 
   You mustn't sit there in your wet jeans; you will catch cold.
   
10. 
    You can do what you like.
    
11. 
    I may read to the end of the story because I want to see who gets the treasure.
    
12. 
    Why should I go there?
    
13. 
    She can sing very well.
    
14. 
    You don't have to say anything. Just nod your head, and he will understand.
    
15. 
    May I take your phone? — You may ask for it. You may take it when you like.
    
16. 
    You don't have to leave your dog with us if you don’t want to take him with you.
    

Exercise 18 Choose the right variant.

1. 
   a) You must have been asleep.
   
2. 
   b) You couldn’t have been in the office.
   
3. 
   b) She couldn’t have seen you.
   
4. 
   a) They must have all gone home.
   
5. 
   a) Not Harry! He must have done something so awful.
   
6. 
   a) You must have paid a lot for it.
   
7. 
   a) I must have left it in the restaurant.
   
8. 
   b) He couldn’t have been hungry.
   
9. 
   b) You cannot have been listening.
   
10. 
    a) I must have done it without you.
    

Exercise 19 Choose the right variant.

1. 
   b) needn’t have gone
   
2. 
   b) needn’t have queued
   
3. 
   b) needn’t have cleaned
   
4. 
   b) needn’t have bought
   
5. 
   a) didn’t need to work
   
6. 
   b) needn’t have written
   
7. 
   a) didn’t need to write
   
8. 
   b) needn’t have told
   
9. 
   b) needn’t have waited
   
10. 
    b) needn’t have sent