Краткое пояснение:
Логика: Необходимо выбрать между Present Perfect Simple и Present Perfect Progressive. Present Perfect Simple используется для завершенных действий, а Present Perfect Progressive - для действий, которые начались в прошлом и продолжаются до сих пор, или для описания длительности действия.
Ответы:
- 0) I've been dieting (to diet) for 8 weeks. I've lost (to lose) 3 pounds.
- 1) I have been trying (to diet) for the past few years. I have tried all sorts of diets.
- 2) I've been doing (to do) a lot of sports during the last month. I've played (to play) three types of games.
- 3) I've been studying (to study) a lot for the last week. I've written (to write) two essays.
- 4) I've been travelling (to travel) a lot for the last two years. I've visited (to visit) four countries.
- 5) My friend's been smoking (to smoke) for two years. He's got (to get) problems with his health.
- 6) I have been taking (to take) dancing lessons for a month. I have learned (to learn) three dances.