Take a look at the sentence again:
In her dreams that night, Diana had __________ in a pool of warm cocoa;
when she awoke, the aroma of chocolate still tickled her nostrils.
The sentence requires the past participle of swim, an irregular verb. Swum is the past participle.
| Verb | Simple Present | Simple Past | Past Participle |
| swim | swim(s) | swam | swum |
Swam, the form you chose, illegally combines the simple past with the auxiliary verb had. Before you continue, review the rules for irregular verbs.
Go back to the sentence to try again.