A B C for a business trip. D

A B C D

19. 
    No sooner I had reached the door than I realized it was locked.
    

A B C D

20. 
    So extensive the lakes are that they are viewed as the largest bodies of fresh water
    

in the world.

Exercise 8 (Parallel structures): Choose the underlined part among A, B, C or D that needs correcting.

1. 
   Sleeping, resting, and to drink fruit juice are the best was to care for a cold. A B C D
   
2. 
   The scientific method consists of forming hypotheses, collect data, and testing
   

A B C

D

3. 
   I like travelling by air because it is fast, safe, and it is convenient.
   

A B C D

4. 
   You should stop wasting your time and doing something useful instead.
   

A B C D

5. 
   After teaching English in Vietnam for ten years, Nicolas decided to buy
   

A B

C D

6. 
   After he had researched his paper and wrote it, he found some additional data
   

A B C

D

7. 
   The examination will test your ability to understand spoken English, to read
   

A B

C D

8. 
   The mountain sheep is known for its incredible agility, timid and ability
   

A B C

D

9. 
   The Concorde can fly across the Atlantic without re-fueling and carrying
   

A B C