How to say in Czech: They are allergic to gluten.

English
are allergic to
Czech
Oni jsou alergičtí na lepek.
Are they allergic to anything?
What are they allergic to?
They live there.
They didn’t write that.
They need to go home.
They want to go home.
Are they ready?
They are going home.
They are leaving in the morning.
They are not ready.

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