How to say in Czech: They work too hard.

English
work too hard.
Czech
Oni moc pracují.
They should work harder.
Are they not too old for that?
They are not too old for her yet.
They are not too old for that yet.
They are not too old yet.
They are spending too much money.
They are too old.
They are too old for her.
They are too old for that.
They are too old for that now.

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