1. sink sank am sinking have sunk

2. forsake forsook am forsaking have forsaken

3. tread trod; treaded am treading have trodden; trod

4. dream dreamed; dreamt am dreaming have dreamed; dreamt

5. strive strove; strived am striving have striven

6. run ran am running have run

7. spring sprung; sprang am springing have sprung

8. go went am going have gone

9. wring wrung/wringed am wringing have wringed/wrung

10. shake shook am shaking have shaken

11. sling slung am slinging have slung

12. climb climbed am climbing have climbed

13. forget forgot am forgetting have forgotten/forgot

14. smell smelled; smelt am smelling have smelled; smelt

15. slay slew; slayed (comic relief) Am slaying have slain

16. ride rode am riding have ridden

17. The Titanic sunk as the sun set over the mountains. Incorrect The Titanic sank as the sun set over the mountains.

18. She forsook me after the unfortunate accident. Correct

19. I have run in three races this fall. Correct

20. I have striven to do my best. Correct

21. I dreamt about you last night. Correct

22. He sprung to his feet and ran toward the station. Correct --  Sprung is often preferred to sprang.

23. I had went to the grocery store before the party. Incorrect

24. We have wringed the towel dry many times this afternoon. Correct

25. He shaked the bag filled with names to assure that the drawing was fair. Incorrect He shook the bag filled with names to assure that the drawing was fair..

26. He slinged the weapon aside as he made his way to the helicopter. Incorrect He slung the weapon aside as he made his way to the helicopter.

27. We clumb the mountain after months of training and preparation. Incorrect We climbed the mountain after months of training and preparation

28. We have rode through the valley many times. Incorrect We have ridden through the valley many times.

29. She had forgot about the severe weather warning. Correct

30. The knight slew the dragon without hesitation. Correct