Take a look at the sentence again:
The hungry shark swam beneath the unsuspecting
surfer and began to position itself for
an attack. Then the fish noticed the hot pink toenail polish on the foot
that dangled over the surfboard and losed
its appetite.
The third verb, losed, is the problem. This sentence requires the simple past of lose, an irregular verb. Lost is the correct form; losed is a spelling error.
| Verb | Simple Present | Simple Past | Past Participle |
| lose | lose(s) | lost | lost |
Began, the verb you chose, is perfectly correct. Before you continue, review the rules for irregular verbs.
Try again to become a champion!