Someone stole his bike a long time ago.My father is repairin

Someone stole his bike a long time ago.My father is repairing his car.
We water these flowers every day.
We are going to post these letters.
She hasn't done the work yet.
We should answer all the questions at once.
I saw a boy play on the street yesterday.
The apples taste sweet.
将以上句子变成被动语态.