1. The professor improvised a poem in the class.

2. We improvised some shelves out of planks of wood and bricks.

3. We improvised a tent out of two blankets and some long poles.

4. We hastily improvised a screen out of an old blanket.

5. He improvised a song about the football team's victory.

6. The vet had improvised a harness.

7. He improvised on the melody.

8. He worked late into the night and improvised a meal for himself.

9. He improvised in rhyme.

10. Annie improvised a sandpit for the children to play in.

11. To sleep on, we improvised a mattress from a pile of blankets.

12. Also the improvised heat shield covering the main compartment can be seen over the top of the station.

13. I improvised a sling for his arm out of a strip of cloth.

14. Even so, much activity can be encouraged with improvised equipment such as planks, boxes, tyres and barrels.

15. Mike improvised a little farewell song at the end of the evening.

16. So when they played after school, they improvised by kicking a tennis ball.

17. If you've improvised and made a tie yourself, undo it and retie.

18. Because she had no garden, she improvised a sandpit for the children to play in.

19. But merely to recite examples of improvised education was to reveal their inadequacy.

20. Uncle Richard intoned a chapter from the Bible and improvised a prayer.

21. The scaffolding, explains Miss Edwards in her book(sentencedict.com/improvised.html), was improvised from spars and oars.

22. The orchestral textures vary subtly and the music is alive with incident-written and improvised.

23. The spread of the revolt after the original outbreak reflects its improvised nature.

24. As the Rattlesnake beat across the seas, Huxley trawled for specimens of sea creatures using an improvised net.

25. The fort was in deep darkness, being equipped with only a few improvised oil lamps.

26. Like Patrick, he at once recognised its potential as an improvised mortar.

27. Chord changes were of particular importance, because they provided the raw material for each improvised solo.

28. Encouraging literature, he organized poetry contests in which candidates improvised rhymes in response to his own verses.

29. The party found its way back to civilization in a starving condition on an improvised raft.

30. Critics of the privatization plan claimed that it was improvised, lacked clear conditions and had suffered from poor regulation.