Ответ:

Краткое пояснение: В упражнении требуется поставить глаголы, данные в скобках, в форму Present Perfect Continuous.
  1. I have been working on this problem for two months.
  2. She has been sleeping all this time?
  3. You have been talking this nonsense all day long.
  4. "Any news about your latest project?" – "I just have been telling about it."
  5. He says he has not been feeling well for the past week.
  6. You are red all over. How long have you been lying in the sun today?
  7. I have been trying to get you all day, George!
  8. I have not been sleeping well for months.
  9. We have been seeing each other regularly since the party at Helen's.
  10. "Jack isn't working now." – "He has not been working for years."