Exercise"to'' before the infinitive where it is necessary. l 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. 8.1 looked for the book everywhere but could not find it. 9. He was seen leave the house 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? You had better go there at once 14 I would rather not tell them about it. 15 We shall take a taxi not miss the train, so as