The key answer of exercise 6
The key to exercise solutions in chapter 3.2 for the textbook Identity B1+ with authors Elizabeth Sharman from Oxford University Press
Question
Write sentences using the Present perfect continuous.
Answer
- Scientists have been investigating global warming for years.
- William has been donating food to charity.
- You haven't been listening to me!
- Has Katy been studying all morning?
- I haven't been feeling very well.
- What have you been working on?