1. I have been translating this article for about an hour and have
translated the first page. 2. I know what you have been working on the last
days. Have you discovered any facts? 3. They have been discussing the case for
hours but have been unable to come to any decision. 4. You have been reading too
many mystery stories of late. Have they given you ideas? 5. She has been trying
all kinds of medicines for years but nothing has been of any use. 6.
Again she has been telling you the gossips. The things you have heard are quite
impossible. 7. I have been telling you so for years but you have never paid
attention. 8. They have been taking her from one specialist to another since
she was a baby but it (not to help). 9. They (to advertise) their
machines since May but they have not got any orders yet.