Ex. Use the Present Continuous or the Present Perfect Continuous tenses

Ex. Use the Present Continuous or the Present Perfect Continuous tenses instead of the infinitives in brackets: 1.She (to live) in that house round the corner about 20 years. 2.You (to play) too long. You must do your lessons now. 3. What you (to look at)?-I (to look) at that picture over there. i (to look) at it for almost half an hour and I still cant understand what it is. 4.What Angela (to do)?-she (to practice ) the piano. She (to play) since 12 oclock . I think she must have a rest. 5.Here you are at last! I (to look) for you everywhere. 6.Why you (to slime) Robert?- I (to watch) your kitten. What a playful little thing it is! 7 I see you (to write) letters since morning. It is the last letter you (to write) now? 8.You (to sit ) here for a long time . you (to wait) for anybody? 9. David (to repair) the tv set. He (to work ) at it for an hour or so . 10.I (to work) at my report since Monday .now I (to write) the conclusion.