Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped.

My father_________ very busy this week. He _________ free next week.

ore and more forests disappearing, today thepublic is much concerned about the way _________

s attended the Olympics Games three times, so he has the _________ of rich experience.

________, they have been struggling against the snowstorm for ten hours.[ ]