1. put “to” before the infinitive where it is necessary. 1 . my son asked me … let him … go to the club. 2 . you must make him … practice an hour a day. 3 . she was made … repeat the song. 4 . he is not sure that it can … be done, but he is willing … try. 5 . let me … help you with your work. 6 . she asked me … read the letter carefully and … write an answer. 7 . you ought … take care of your health. 8 . i looked for the book everywhere but could not … find it. 9 . he was seen … leave the house. 10 . we had … put on our overcoats because it was cold. 11 . the man told me not … walk on the grass. 12 . have you heard him … play the piano? 13 . you had better … go there at once. 14 . i would rather not … tell them about it. 15 . we shall take a taxi so as not … miss the train. 2. 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)