1. I couldn’t make my car to start this morning. starting

2. I’m sure he isn’t incapable of run a mile in four minutes.  running

3. Good friendship should be based on mutual understand. A good/ understanding

4. I’m delighted hearing that you have made much progress in your study.to hear 

5. There is a lot of work doing here. to do

6. He was terribly excited to ask to play for Manchester. asking

7. He could not decide whether to get a job or studying. to study

8. I dislike being talk about everywhere.talked

9. He says that speak a foreign language always makes him nervous. speaking

10. We’re looking forward to see you again.   seeing

Exercise 6: Underline the mistake in each sentence.

1. I’d like buying some earrings like yours.   to buy

2. She smelt something burning and saw smoke rise.   the smoke

3. I warned them not climb the mountain in such bad weather.   to climb

4. They voluntarily spent their vacations to teach illiterate people to read and write.    teaching

5. You can congratulate yourself about having done an excellent job.    on

6. Peter apologized for break the vase.    breaking

7. He insisted on seeing the manager tomorrow.  ( bó tay ) 

8. Some high school students take part in help the handicapped.    helping

9. Shy people find it difficult taking part in group discussion. 10. I am unable come to the meeting on Monday evening, please apologize for my absence.     to take/ discussions/ to come