1. We have walked ten kilometres already. 2. We have been walking for three hours. 3.I'm on a diet, I have been eating nothing but apples for the whole week. 4.He has been sleeping since ten o'clock.It's time he woke up. 5.The student has been working very well this term. 6.I have been working with him for ten years and he has never said "Good morning" to me. 7.Have you heard the news? Tom and Ann are engaged! 8.How many baskets of apples have you picked? It seems to me you have been picking them for 3 hours already. 9.Have you seen my bag anywhere? I have been looking for it for half an hour.