26. I'm moving to the countryside because the air there is much fresher than________ in the city. (A) ones (B) one (C) that (D) those

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