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went out to post it. A. Writing B. Being writing C. Having written D. Written 28. ______ anything about the accident, he went to work as usual. A. Not known B. Known not C. Knowing not D. Not knowing 29. There was terrible noise ______ the sudden burst of light. A. followed B. following C. to be followed D. being followed 30. ______ for several weeks, the city needed food. A. As having flooded B. Being flooded C. Having been flooded D. To flood 31. Most of the people ______ to the party were famous scientists. A. invited B. to invite C. being invited D. inviting 32. ________ in thought, he almost ran into the car in front of him. A. Losing B. Having lost C. Lost D. To lose 33. ______ from space, the earth, with water ______ seventy percent of its surface, looks like a blue ball. A. Seen, covered B. Seen, covering C. Seeing, covering D. Seeing, covered 34. Mr. Smith, ______ of the ______ speech, started to read a novel. A. tired。 boring B. tiring。 bored C. tired。 bored D. tiring。 boring 35. When ______, the museum will be open to the public next year. A. pleted B. pleting C. being pleted D. to be pleted 36. ______ time, he’ll make a firstclass tennis player. A. Having given B. To give C. Giving D. Given 3