13. Раскройте скобки и употребите глагол в Present Perfect Progressive, переведите

13. Раскройте скобки и употребите глагол в Present Perfect Progressive, переведите предложения на российский язык.
1. I (make) cakes. That is why my hands are all covered with flour.
2. Her phone (ring) for ten minutes. I wonder why she doesn't answer it.
3. He (overwork). That is why he looks so tired.
4. There is sawdust in your hair. - I'm not surprised. I (cut) down a tree.
5. Have you seen my bag anywhere? I (look) for it for ages.
6. What you (do)? - I (work) in the laboratory.
7. He (study) Russian for two years and doesn't even know the alphabet
yet.
8. How long you (wait) for me? - I (wait) about half an hour.
9. It (rain) for two days now. There'll be a flood soon.
10. We (argue) about this for two hours now. Perhaps we should stop!