1) Insert “to” where necessary before the Infinitives in brackets.
1. She must (to take care) not (to offend) her.
2. I’d rather not (to go) home that way.
3. There is nothing (do) but (wait) till somebody comes (let) us out.
4. The American said he had seen nine presidents (come) and (go). He must (be) a very old man.
5. He was made (sign) a paper admitting his guilt.
6. Why not (to make) him a doctor like his father?
7. He tried (make) me (believe) that he was my stepbrother.
8. I felt the house (shake) with the explosion.
9. He never let himself (to be) angry.
10. It is better (be) sure than sorry.
11. You’d better (to try) not (to think) about it.
12. I’m sorry (disappoint) you but I can’t (let) you (have) any more money till the end of the month.
13. She began (to talk) of Brighton.
14. I helped him (to find) the things.
15. We had better (to make) haste.
2) Insert “to” where necessary before the Infinitives in brackets.
1. The chairman was heard (second) his proposal.
2. My neighbour let me (to borrow) his own car.
3. What made you (to think) so?
4. You needn't (say) anything. Just nod your head and he will understand.
5. Would you rather (be) more stupid than you look or (look) more stupid than you are?
6. The bank robbers made the cashier (show) them how (open) the safe.
7. How dare you (open) my letters!
8. What made you (to deceive) me?
9. I need scarcely (tell) you that I’m in trouble.
10. You ought not (to sit up) so late.
11. There’s nothing (to do) but (to wait) till somebody comes (to let) us out.
12. She seems (to know) a great deal about music.
13. He told me (to try) (to do) it once again.
14. Before he let us (go) he made us (promise) (not tell) anyone what we had seen.
15. He was seen (to make) a note of it.
3) Insert “to” where necessary before the Infinitives in brackets.
1. I asked him if he was willing (to help) me (to do) the job.
2. I used (to spend) a lot of time in Robert’s room.
3. Why not (to start) out now? We can’t (to wait) for the weather (to change). 4. Why not (start) out right now?
5. Have you ever heard him (complain) of difficulties?
6. He was never heard (complain) of difficulties.
7. Don’t let us (to waste) time. There are hundreds of things (to be done).
8. Don’t let us (waste) time. There are hundreds of things (be done).
9. He was made (do) his work independently.
10. Let’s (to watch) the boys diving.
11. He would sooner (die) than (betray) his friends.
12. I know him (have been) an actor once.
13. I have never known him (do) such things.
14. There is hardly anything (do) but (work) out an alternative plan.
15. I can’t (to think) what made him (to do) such a thing.