Помогите перевести 3. We all felt that if would never do

Помогите перевести
3. We all felt that if would never do to let Father stay home.
It will never do to underline words in a library book.
It will never do to throw cigarette-ends on the floor.
Why are you shouting at the top of your voices?
It will never do. You have treated her very badly.
Rudeness will never do.
The boy said it would never do for a young girl to use so much make-up.
4. That kept Mother busy for a little while.
At night I always keep my window open.
They never keep their door shut.
Keep your feet warm or you'll catch cold.
He kept his room scrupulously clean.
She told the child an interesting story to keep him awake.
Keeping the child warm is not the same thing as keeping him healthy.