Here is the item:
Whenever Mike _________ his Cessna 152, a small airplane, he worried about running out of fuel, hitting birds, and being abducted by alien spaceships.

The blank requires the past tense of fly, an irregular verb. You chose flew, the correct form. Nice work, grammar brain!

Verb Simple
Present
Simple
Past
Past
Participle
fly fly(ies) flew flown

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