.The universe began with the Big Bang 13.7 billion years ago, with everything___ in space smaller than a grain of sand.
32. 一You were brave enough to raise objections at the meeting. 一 Well, now I regret_________ that.
31. The chair looks rather hard,but in fact it is very comfortable to________.
30. Wang Tao was made_______ the dishes for a week as a punishment.
29. When I handed the report to John,he said that George was the person______.
28.Although _____ to stop, he kept on working.