Choose the correct verb forms to complete the sentences. 1 Why have you switched off / beеn switching off the сomputer? Ithink I've found / been finding a good artice aboue space discovery. 3 They've studied / been studying the galaxy forsic months now. 4 Нave you finished / Have you been finishing that bnok about the solar system yet? 5 Scientists haven't discovered / haven't been discouenine the nature of these satellites yet. 6 Look at Jenny! She's painted / been painting and she's covered in paint! 7 Why have you sat /been sitting in front of your computer all day? 8 Ive read /bееn reading Tim's book about the Voyager space probe: I'Llend it to you when I've finished it
1. switched off
2. found
3. been studying
4. haven't you finished
5. haven't discovered
6. been painting
7. been sitting
8. been reading