28. David has won the first prize in singing; he is still very excited now and feels________ desire to go to bed. (A) the most (B) more (C) worse (D) the least

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