we were flying ( )the sea when we saw the spaceship 用in on at for of between out

问题描述:

we were flying ( )the sea when we saw the spaceship 用in on at for of between out

fly out
乘坐飞机至远方;空运至远方:
例句: His father flew out to see him in hospital.
他的父亲从远方乘飞机到医院来看他。

for