How to say in Czech: Do they need his mobile number?

English
Do need
Czech
Potřebují jeho mobilní číslo?
What is his telephone number?
They do not need his mobile number.
They need his mobile number.
Did they forget his mobile number?
Do they have his mobile number?
Do they know his mobile number?
Do they want his mobile number?
They do not have his mobile number.
They do not know his mobile number.
They forgot his mobile number.

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