Present perfect/present perfect cont. 3) she (be) of great help to us since she (live) for such a long time with us. 4) you ever (work) as interpreter? — yes, that is what i (do) for the last five months. 5) they (make up) their quarrel? — i don't know. i only know that they (not be) on speaking terms since september. 6) our pilot (ask) for permission to take off for ten minutes already, but he (get) no answer yet. 7) a skilful photographer (help) me with the development of summer films for two weeks, but we (develop) only half of them. 8) i (know) them since we met at ann's party. 9) you (open) the door at last. i (ring) for an hour at least, it seems to me. 10) look, the typist (talk) all the time, she already (miss) several words.
