Fun English Grammar Worksheets To Boost Learning! - Free Printable

Let’s go through each sentence one by one. We need to change the verb in parentheses into its past participle form — that’s the version of the verb we use with “have,” “has,” or “had” to talk about things that happened before now (or before another past event).

Here’s how it works:
- For regular verbs, just add -ed (like “walk → walked”).
- For irregular verbs, you have to memorize them (like “go → gone”, “see → seen”).

Let’s solve each one:

1. know → known
2. think → thought
3. predict → predicted
4. strike → struck
5. arise → arisen
6. see → seen
7. do → done
8. find → found
9. ask → asked
10. go → gone
11. get → got (or gotten — both are correct, but “got” is more common in British English; “gotten” in American)
→ Since this worksheet seems to use standard American English (based on examples), let’s use gotten for #11 and #12 if needed. But wait — actually, “have got” is often used as “have” in informal speech, but here it’s “could have got/gotten”. In formal grammar, “gotten” is preferred for the past participle when meaning “obtained.” So we’ll go with gotten.
12. bring → brought
13. choose → chosen
14. give → given
15. run → run (yes! “run” is the same in base, past, and past participle)

Wait — let me double-check a few tricky ones:

- “strike” → past participle is struck (not “stricken” unless it’s an adjective like “stricken with grief”)
- “arise” → arisen
- “get” → in American English, “gotten” is correct for past participle when meaning “received” or “obtained”
- “run” → yes, run is correct (I have run, he has run)

Also, note: some sentences use “could have”, “would have”, “should have”, etc. — all of these require the past participle after “have”.

Now let’s write out the answers clearly:

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Final Answer:
1. known
2. thought
3. predicted
4. struck
5. arisen
6. seen
7. done
8. found
9. asked
10. gone
11. gotten
12. brought
13. chosen
14. given
15. run