一.单句填空（每题1分，共10分）
1. We were delayed at the airport. O____we would have been here by lunchtime.
2. He was _________ (devote) to the reformation of science.
3.When the headmaster spoke out his plan, the ______(major) of the students were against it.
4. The number of staff has ________ (decline) from 217,000 to 114,000...
5. At their ________ (approach), the little boy ran away and hid.
