Exercise 17: Choose the underlined part among A, B, C or D that needs correcting

A B C D

3. 
   Although I try hard to play the guitar, but I don't seem to improve.
   

A B C D

4. 
   As you can see, costs of living have been reduced for 20% over the past year.
   

A B C D

5. 
   There will be major changes in climate during next century.
   

A B C D

6. 
   I’m fed up for you telling me what to do.
   

A B C D

7. 
   Children usually get bored of doing the same activity during a lesson.
   

A B C D

8. 
   Are you fond at walking in the rain without wearing a raincoat?
   

A B C D

9. 
   David’s new computer is similar than mine.
   

A B C D

10. 
    Tom’s parents think that chocolates are bad at him.
    

A B C D

Exercise 18: Choose the underlined part among A, B, c or D that needs correcting.

1. 
   Last year my little brother got lost when we had gone shopping.
   

A B C D

2. 
   Is he aware of how long we are waiting for the tour to start?
   

A B C D

3. 
   We don’t know why Mary is upset, and she didn’t speak to us for ages.
   

A B C D

4. 
   They asked me what did it happen last night, but I was unable to tell them.
   

A B C D

5. 
   I haven’t come back to Hanoi from my brother last visited me.
   

A B C D

6. 
   Have you finished reading the English magazine which I lend you yesterday?
   

A B C D

7. 
   He asked me whether 1 had never been to America before.
   

A B C D

8. 
   Paul decided to join the army after the first year at college and he was in
   

A B C D

9. 
   The director, as well as his wife and two children, were injured in the accident.