How to say in Czech: Can you help him with this?

English
Can you help with this?
Czech
Můžeš mu s tím pomoct?
Do you understand him?
How can I help him?
Can you decribe him?
Can you hear him?
Can you see him?
You can rely on him.
You can see him.
Can he ask him a few questions?
I will show him what I can do!
What can I do for him?

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