25.---- Is Bob still performing? ---- I'm afraid not. He is said________ the stage already as he has become an official (A) to have left (B) to leave (C) to have been left (D) to be left

29.They _______ on the program for almost one week before I joined them, and now we________ it as no good results have come out so far. (A) had been working; are still working (B) had worked; were still working (C) have been working; have worked (D) have worked; are still working