1 Peter started …… (to smoke) when he was 15, but he stopped …… (to smoke) three years ago I enjoy …… (to get up) late on weekends, but I also don’t mind …… (to get up) early during the week I suggest …… (to go out) this weekend – would you like …… (to join)? I first wanted …… (to sell) my old car But then I refused …… (to sell) it and decided …… (to keep) it Even after losing the job, he continued …… (to get up) early I’d love …… (to meet) but I prefer …… (to see) us on Tuesday He offered me …… (to choose) the date for the meeting and I suggested …… (to opt) for Monday I forgot … (to switch) off the light, we need … (to go) back Suddenly, she started …… (to cry) 10 He promised …… (to call) once in New York 11 He tried …… (to concentrate) on his work but kept on thinking about her 12 I love … (to have) a cup of coffee early in the morning INFINITIVE or ING-FORM? Keys Peter started to smoke/smoking when he was 15, but he stopped smoking three years ago I enjoy getting up late on weekends, but I also don’t mind getting up early during the week I suggest going out this weekend – would you like to join? I first wanted to sell my old car But then I refused to sell it and decided to keep it Even after losing the job, he continued getting up/to get up early I’d love to meet but I prefer seeing/to see us on Tuesday He offered me to choose the date for the meeting and I suggested opting for Monday I forgot to switch off the light, we need to go back Suddenly, she started to cry/crying 10 He promised to call once in New York 11 He tried to concentrate on his work but kept on thinking about her 12 I love having/to have a cup of coffee early in the morning