初二英语造句用 when 和 while 引导的时间状语从句 一个造一句谢谢!当UFO离开的时候 女孩 在干什么?她在吃

是每个都用when和while,还是只要用到就可以呢,有点歧义
1.What was the girl doing when the UFO left?
She was eating ice-cream.
2.What was the boy doing while the UFO was leaving?
He was taking a photo.
3.What was the woman doing when the UFO left?
She was watching the UFO.
4.What was the man doing while the UFO was leaving?
He was riding his bike.

What was the girl doing when the UFO left?
She was eating ice cream.
What was the boy doing while the UFO was leaving?
He was taking a photo.
What was the woman doing when the UFO left?
She was watching the UFO.
What was the man doing while the UFO was leaving?
He was riding his bike.

1.what was the girl doing when the UFO left? she was eating the icecream
2.what was the boy doing while the UFO left? he was taking the photograph
3.what was the woman doing when the UFO left? she was watching the UFO
4. what was the man doing when the UFO left ? he was riding the bicycle