-I can’t believe that you _______ that old trick.-Yes, I was stupid enough.
35. I like getting up very early in summer. The morning air is so good ________.
34. ___________ the project as planned, we will have to work two more hours a day.
33. Premier Wen Jiabao visited the Red Square_________ by Russia President Putin.
32. The mountain is covered with heavy snow and it is ______ only by helicopter.
31. Dorothy was always speaking highly of her role in the play, _______ of course, made the others unhappy.