Use the appropriate form of the infinitive.

1. They want (to take) to the concert by their father.
2. I am glad (to do) all the homework yesterday.
3. This plant is known (to produce) tractors.
4. He wants his son (to become) a lawyer.
5. The enemy army was reported (to overthrow) the defense lines and (to advance) towards the suburbs of the city.
6. He seems (to know) French very well: he is said (to spend) his youth in Paris.
7. You had better (to call) our distributors at once.
8. We are happy (to invite) to the party.
9. That firm is reported (to conduct) negotiations for the purchase of sugar.
10. It seemed (to snow) heavily since early morning: the ground was covered with a deep layer of snow.
11. He didn’t hear me (to knock) at the door.
12. I want (to inform) of her arrival.
13. Our sportsmen are proud (to win) the cup.
14. He is known (to work) on the problem for many years.
15. The representative of the firm asked for the documents (to send) by air mail.

3. Put “to” where necessary.

1. I think you ought … apologize.
2. Make him … speak louder.
3. Help me … carry this bag.
4. My son asked me … let him … go to the theatre.
5. I must … go to the country.
6. It cannot … be done to-day.
7. She asked me … read the letter carefully and … write an answer.
8. The man told me not … walk on the grass.
9. Let me … help you with your work.
10. She ought … take care of her health.
11. We had better … stop to rest a little.
12. I don’t know what … do.
13. He was seen … leave the house.
14. We have come … ask whether there is anything we can … do.
15. We heard the siren … sound and saw the ship … move.
16. I cannot … go there now, I have some work … do.
17. During the crossing the passengers felt the ship … toss.
18. You must make him … practice an hour a day.
19. He is not sure that it can … be done, but he is willing … try.
20. I looked for the book everywhere but could not … find it.
21. He said that she might … come in the evening.
22. She was made … repeat the song.
23. Would you rather … learn shorthand than typewriting?

4. Make infinitives (add “to”) or gerunds (add “-ing”) of the verbs in brackets to make the following sentences grammatically correct.

1. When I’m tired, I enjoy... television. It’s relaxing. (watch)
2. It was a nice day, so we decided... for a walk. (go)
3. It’s a nice day. Does anyone fancy... for a walk? (go)
4. I’m not in a hurry. I don’t mind... (wait)
5. They don’t have much money. They can’t afford... out very often. (go)
6. I wish that dog would stop... It’s driving me mad. (bark)
7. Our neighbour threatened... the police if we didn’t stop the noise. (call)
8. We were hungry, so I suggested... dinner early. (have)
9. Hurry up! I don’t want to risk... the train. (miss)
10. I’m still looking for a job but I hope... something soon. (find)

5. Complete the following sentences with infinitives (add “to”) or gerunds (add “-ing”) of the verbs below to make them grammatically correct.

answer apply be be listen make see try use wash work write

1. He tried to avoid... my question.
2. Could you please stop... so much noise?
3. I enjoy... to music.
4. I considered... for the job but in the end I decided against it.
5. Have you finished... your hair yet?
6. If you walk into the road without looking, you risk... knocked down.
7. Jim is 65 but he isn’t going to retire yet. He wants to carry on....
8. I don’t mind you... the phone as long as you pay for all your calls.
9. Hello! Fancy... you here! What a surprise!
10. I’ve put off... the letter so many times. I really must do it today.
11. What a stupid thing to do! Can you imagine anybody... so stupid?
12. Sarah gave up... to find a job in this country and decided to go abroad.

6. Make infinitives (with or without “to”) or gerunds (add “-ing”) of the verbs in brackets to make the following sentences grammatically correct.

1. She doesn’t allow... in the house. (smoke)
2. I’ve never been to Iceland but I’d like... there. (go)
3. I’m in a difficult position. What do you advise me...? (do)
4. She said the letter was personal and wouldn’t let me...it. (read)
5. We were kept at the police station for two hours and then we were allowed... (go)
6. Where would you recommend me... for my holidays? (go)
7. I wouldn’t recommend... in that restaurant. The food is awful. (eat)
8. The film was very sad. It made me... (cry)
9. Carol’s parents always encouraged her... hard at school. (study)