她在 18 岁时学会了飞行。

She learned to ___fly at the age of 18.

路易丝，你现在是唯一能驾驶这艘宇宙飞船的人。

Louise, you are the only one who can ___fly this spaceship now.

他有一天想驾驶直升机。

He wants to ___fly a helicopter someday.