The two-piece verbs that can have an object can be separable or inseparable.
The separable verbs can have the preposition before or after the object --
How do officers keep the morale of their soldiers up?
How do officers keep up the morale of their soldiers?
অফিসাররা কীভাবে তাদের সৈন্যদের মনোবল বজায় রাখেন ?
Keep this side of the box up.
Keep up this side of the box.
বাক্সের এই দিকটি উপরে রাখুন।
If the object is a pronoun, the preposition must go after it. --
They keep it up.
তারা এটা বজায় রাখে।
In the inseparable verbs the preposition is stuck to the verb --
He looks after his mother.
সে তার মায়ের দেখাশোনা করে।
He looks after her.
সে তার দেখাশোনা করে।
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