28. The firm invested approximately 60 million dollars in________it says is the world’s largest bottle-bottle recycling plant.
36. —Was the guest’s speech interesting?—Not at all. He was at a ______ and didn’t know what to say when others asked him questions.
35. —What’s that noise? —Oh, I forgot to tell you. Your bike ______.
34. English is considered as a(n) _______ language, and it is no surprise that there are so many people in the world learning it.
33. —We want to sit at the table near the door. —I’m sorry, but it _______ already.
32. It is reported that the scientists in our country are ______ all possible ways to control H1N1 flu.