Take a look at the sentence again:
On Christmas Eve, Captain Beane wore a pair of antlers while greeting passengers
boarding his 727. The costume __________ little trust in Louise, whose fear
of flying required a serious pilot.
The sentence requires the past tense of build, an irregular verb. Built is the simple past form.
| Verb | Simple Present | Simple Past | Past Participle |
| build | build(s) | built | built |
Builded, the form you chose, is a spelling error. Before you continue, review the rules for irregular verbs.
Go back to the sentence to try again.